Define Homology In Biology

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  define homology in biology: Homology, Genes, and Evolutionary Innovation Günter P. Wagner, 2018-07-10 A major synthesis of homology, written by a top researcher in the field Homology—a similar trait shared by different species and derived from common ancestry, such as a seal's fin and a bird’s wing—is one of the most fundamental yet challenging concepts in evolutionary biology. This groundbreaking book provides the first mechanistically based theory of what homology is and how it arises in evolution. Günter Wagner, one of the preeminent researchers in the field, argues that homology, or character identity, can be explained through the historical continuity of character identity networks—that is, the gene regulatory networks that enable differential gene expression. He shows how character identity is independent of the form and function of the character itself because the same network can activate different effector genes and thus control the development of different shapes, sizes, and qualities of the character. Demonstrating how this theoretical model can provide a foundation for understanding the evolutionary origin of novel characters, Wagner applies it to the origin and evolution of specific systems, such as cell types; skin, hair, and feathers; limbs and digits; and flowers. The first major synthesis of homology to be published in decades, Homology, Genes, and Evolutionary Innovation reveals how a mechanistically based theory can serve as a unifying concept for any branch of science concerned with the structure and development of organisms, and how it can help explain major transitions in evolution and broad patterns of biological diversity.
  define homology in biology: Icons of Evolution Jonathan Wells, 2002-01-01 Everything you were taught about evolution is wrong.
  define homology in biology: Handbook of Paleoanthropology Winfried Henke, Ian Tattersall, 2007-05-10 This 3-volume handbook brings together contributions by the world ́s leading specialists that reflect the broad spectrum of modern palaeoanthropology, thus presenting an indispensable resource for professionals and students alike. Vol. 1 reviews principles, methods, and approaches, recounting recent advances and state-of-the-art knowledge in phylogenetic analysis, palaeoecology and evolutionary theory and philosophy. Vol. 2 examines primate origins, evolution, behaviour, and adaptive variety, emphasizing integration of fossil data with contemporary knowledge of the behaviour and ecology of living primates in natural environments. Vol. 3 deals with fossil and molecular evidence for the evolution of Homo sapiens and its fossil relatives.
  define homology in biology: Understanding Evolution Kostas Kampourakis, 2014-04-03 Bringing together conceptual obstacles and core concepts of evolutionary theory, this book presents evolution as straightforward and intuitive.
  define homology in biology: The Philosophy of Biology Kostas Kampourakis, 2013-06-18 This book brings together for the first time philosophers of biology to write about some of the most central concepts and issues in their field from the perspective of biology education. The chapters of the book cover a variety of topics ranging from traditional ones, such as biological explanation, biology and religion or biology and ethics, to contemporary ones, such as genomics, systems biology or evolutionary developmental biology. Each of the 30 chapters covers the respective philosophical literature in detail and makes specific suggestions for biology education. The aim of this book is to inform biology educators, undergraduate and graduate students in biology and related fields, students in teacher training programs, and curriculum developers about the current state of discussion on the major topics in the philosophy of biology and its implications for teaching biology. In addition, the book can be valuable to philosophers of biology as an introductory text in undergraduate and graduate courses.
  define homology in biology: The Evolution of Phylogenetic Systematics Andrew Hamilton, 2013-11-09 The Evolution of Phylogenetic Systematics aims to make sense of the rise of phylogenetic systematics—its methods, its objects of study, and its theoretical foundations—with contributions from historians, philosophers, and biologists. This volume articulates an intellectual agenda for the study of systematics and taxonomy in a way that connects classification with larger historical themes in the biological sciences, including morphology, experimental and observational approaches, evolution, biogeography, debates over form and function, character transformation, development, and biodiversity. It aims to provide frameworks for answering the question: how did systematics become phylogenetic?
  define homology in biology: Homology Molecular Modeling Rafael Trindade Maia, Rômulo Maciel de Moraes Filho, Magnólia De Araújo Campos, 2021-03-10 Homology modeling is an extremely useful and versatile technique that is gaining more and more space and demand in research in computational and theoretical biology. This book, “Homology Molecular Modeling - Perspectives and Applications”, brings together unpublished chapters on this technique. In this book, 7 chapters are intimately related to the theme of molecular modeling, carefully selected and edited for academic and scientific readers. It is an indispensable read for anyone interested in the areas of bioinformatics and computational biology. Divided into 4 sections, the reader will have a didactic and comprehensive view of the theme, with updated and relevant concepts on the subject. This book was organized from researchers to researchers with the aim of spreading the fascinating area of molecular modeling by homology.
  define homology in biology: Principles of Biology Lisa Bartee, Walter Shiner, Catherine Creech, 2017 The Principles of Biology sequence (BI 211, 212 and 213) introduces biology as a scientific discipline for students planning to major in biology and other science disciplines. Laboratories and classroom activities introduce techniques used to study biological processes and provide opportunities for students to develop their ability to conduct research.
  define homology in biology: Computational Protein Design Ilan Samish, 2016-12-03 The aim this volume is to present the methods, challenges, software, and applications of this widespread and yet still evolving and maturing field. Computational Protein Design, the first book with this title, guides readers through computational protein design approaches, software and tailored solutions to specific case-study targets. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Computational Protein Design aims to ensure successful results in the further study of this vital field.
  define homology in biology: Evolutionary Developmental Biology Laura Nuno de la Rosa, Gerd Müller, 2020-11-15 This reference work provides an comprehensive and easily accessible source of information on numerous aspects of Evolutionary Developmental Biology. The work provides an extended overview on the current state of the art of this interdisciplinary and dynamic scientific field. The work is organized in thematic sections, referring to the specific requirements and interests in each section in far detail. “Evolutionary Developmental Biology – A Reference Guide” is intended to provide a resource of knowledge for researchers engaged in evolutionary biology, developmental biology, theoretical biology, philosophy of sciences and history of biology.
  define homology in biology: The Nature of Classification J. Wilkins, M. Ebach, 2013-11-27 Discussing the generally ignored issue of the classification of natural objects in the philosophy of science, this book focuses on knowledge and social relations, and offers a way to understand classification as a necessary aspect of doing science.
  define homology in biology: Molecular Biology of the Cell , 2002
  define homology in biology: Sequence — Evolution — Function Eugene V. Koonin, Michael Galperin, 2013-06-29 Sequence - Evolution - Function is an introduction to the computational approaches that play a critical role in the emerging new branch of biology known as functional genomics. The book provides the reader with an understanding of the principles and approaches of functional genomics and of the potential and limitations of computational and experimental approaches to genome analysis. Sequence - Evolution - Function should help bridge the digital divide between biologists and computer scientists, allowing biologists to better grasp the peculiarities of the emerging field of Genome Biology and to learn how to benefit from the enormous amount of sequence data available in the public databases. The book is non-technical with respect to the computer methods for genome analysis and discusses these methods from the user's viewpoint, without addressing mathematical and algorithmic details. Prior practical familiarity with the basic methods for sequence analysis is a major advantage, but a reader without such experience will be able to use the book as an introduction to these methods. This book is perfect for introductory level courses in computational methods for comparative and functional genomics.
  define homology in biology: Homology, an Unsolved Problem Sir Gavin De Beer, 1971
  define homology in biology: Homoplasy Michael J. Sanderson, Larry Hufford, 1996-10-21 Why do unrelated organisms sometimes appear almost identical in details of the anatomy, behavior, physiology, and ecology? Homoplasy assembles leaders in evolutionary biology to explore issues of parallelism, convergence, and reversals. This innovative book is certain to provoke discussion of homoplasy compelling evidence for particular theories of evolutionary change - The first book on this increasingly interesting subject - Includes authoritative treatments from leading experts expressing a variety of viewpoints
  define homology in biology: Convergent Evolution George R. McGhee, 2011 Convergent evolution occurs on all levels, from tiny organic molecules to entire ecosystems of species.
  define homology in biology: Your Inner Fish Neil Shubin, 2008-01-15 The paleontologist and professor of anatomy who co-discovered Tiktaalik, the “fish with hands,” tells a “compelling scientific adventure story that will change forever how you understand what it means to be human” (Oliver Sacks). By examining fossils and DNA, he shows us that our hands actually resemble fish fins, our heads are organized like long-extinct jawless fish, and major parts of our genomes look and function like those of worms and bacteria. Your Inner Fish makes us look at ourselves and our world in an illuminating new light. This is science writing at its finest—enlightening, accessible and told with irresistible enthusiasm.
  define homology in biology: Explore Evolution Stephen C. Meyer, Paul Nelson, Jonathan Moneymaker, Scott Minnich, Ralph Seelke, 2013-09-01
  define homology in biology: The Changing Role of the Embryo in Evolutionary Thought Ron Amundson, 2005-03-14 In this book Ron Amundson examines two hundred years of scientific views on the evolution-development relationship from the perspective of evolutionary developmental biology (evo-devo). This perspective challenges several popular views about the history of evolutionary thought by claiming that many earlier authors had made history come out right for the Evolutionary Synthesis. The book starts with a revised history of nineteenth-century evolutionary thought. It then investigates how development became irrelevant with the Evolutionary Synthesis. It concludes with an examination of the contrasts that persist between mainstream evolutionary theory and evo-devo. This book will appeal to students and professionals in the philosophy and history of science, and biology.
  define homology in biology: Concepts of Biology Samantha Fowler, Rebecca Roush, James Wise, 2023-05-12 Black & white print. Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.
  define homology in biology: Extracellular Matrix and Egg Coats , 2018-05-28 Extracellular Matrix and Egg Coats, Volume 130, the latest release in the Current Topics in Developmental Biology series, highlights new advances in the field, with this new volume presenting interesting chapters on The Human Egg's Zona Pellucida, the Structure of Zona Pellucida Module Proteins, The Fish Egg's Zona Pellucidam The Chicken Egg's Zona Pellucidam The Marsupial Egg's Zona Pellucida, the Evolution of Zona Pellucida Proteins, The Mouse Egg's Zona Pellucida, Aspects of ECM, ECM and Morphogenesis, Collagen fibril assembly and function, The Ear's Tectorial Membrane, ECM and Cell Fate, and the Aspects of ECM. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in the Current Topics in Developmental Biology series - Updated release includes the latest information on the Extracellular Matrix in Development
  define homology in biology: Biology for AP ® Courses Julianne Zedalis, John Eggebrecht, 2017-10-16 Biology for AP® courses covers the scope and sequence requirements of a typical two-semester Advanced Placement® biology course. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology for AP® Courses was designed to meet and exceed the requirements of the College Board’s AP® Biology framework while allowing significant flexibility for instructors. Each section of the book includes an introduction based on the AP® curriculum and includes rich features that engage students in scientific practice and AP® test preparation; it also highlights careers and research opportunities in biological sciences.
  define homology in biology: Dynamic Homology and Phylogenetic Systematics Ward Wheeler, 2006
  define homology in biology: The Serengeti Rules Sean B. Carroll, 2024-08-20 One of today's most accomplished biologists and gifted storytellers reveals the rules that regulate all life How does life work? How does nature produce the right numbers of zebras and lions on the African savanna, or fish in the ocean? How do our bodies produce the right numbers of cells in our organs and bloodstream? In The Serengeti Rules, award-winning biologist and author Sean Carroll tells the stories of the pioneering scientists who sought the answers to such simple yet profoundly important questions, and shows how their discoveries matter for our health and the health of the planet we depend upon. One of the most important revelations about the natural world is that everything is regulated—there are rules that regulate the amount of every molecule in our bodies and rules that govern the numbers of every animal and plant in the wild. And the most surprising revelation about the rules that regulate life at such different scales is that they are remarkably similar—there is a common underlying logic of life. Carroll recounts how our deep knowledge of the rules and logic of the human body has spurred the advent of revolutionary life-saving medicines, and makes the compelling case that it is now time to use the Serengeti Rules to heal our ailing planet. Bold and inspiring, The Serengeti Rules illuminates how life works at vastly different scales. Read it and you will never look at the world the same way again.
  define homology in biology: Mapping and Sequencing the Human Genome National Research Council, Division on Earth and Life Studies, Commission on Life Sciences, Committee on Mapping and Sequencing the Human Genome, 1988-01-01 There is growing enthusiasm in the scientific community about the prospect of mapping and sequencing the human genome, a monumental project that will have far-reaching consequences for medicine, biology, technology, and other fields. But how will such an effort be organized and funded? How will we develop the new technologies that are needed? What new legal, social, and ethical questions will be raised? Mapping and Sequencing the Human Genome is a blueprint for this proposed project. The authors offer a highly readable explanation of the technical aspects of genetic mapping and sequencing, and they recommend specific interim and long-range research goals, organizational strategies, and funding levels. They also outline some of the legal and social questions that might arise and urge their early consideration by policymakers.
  define homology in biology: The Development of Animal Form Alessandro Minelli, 2003-03-03 Contemporary research in the field of evolutionary developmental biology, or 'evo-devo', has to date been predominantly devoted to interpreting basic features of animal architecture in molecular genetics terms. Considerably less time has been spent on the exploitation of the wealth of facts and concepts available from traditional disciplines, such as comparative morphology, even though these traditional approaches can continue to offer a fresh insight into evolutionary developmental questions. The Development of Animal Form aims to integrate traditional morphological and contemporary molecular genetic approaches and to deal with post-embryonic development as well. This approach leads to unconventional views on the basic features of animal organization, such as body axes, symmetry, segments, body regions, appendages and related concepts. This book will be of particular interest to graduate students and researchers in evolutionary and developmental biology, as well as to those in related areas of cell biology, genetics and zoology.
  define homology in biology: On the Origin of Phyla James W. Valentine, 2004-06-18 Owing its inspiration and title to On the Origin of Species, James W. Valentine's ambitious book synthesizes and applies the vast treasury of theory and research collected in the century and a half since Darwin's time. By investigating the origins of life's diversity, Valentine unlocks the mystery of the origin of phyla. One of the twentieth century's most distinguished paleobiologists, Valentine here integrates data from molecular genetics, evolutionary developmental biology, embryology, comparative morphology, and paleontology into an analysis of interest to scholars from any of these fields. He begins by examining the sorts of evidence that can be gleaned from fossils, molecules, and morphology, then reviews and compares the basic morphology and development of animal phyla, emphasizing the important design elements found in the bodyplans of both living and extinct phyla. Finally, Valentine undertakes the monumental task of developing models to explain the origin and early diversification of animal phyla, as well as their later evolutionary patterns. Truly a magnum opus, On the Origin of Phyla will take its place as one of the classic scientific texts of the twentieth century, affecting the work of paleontologists, morphologists, and developmental, molecular, and evolutionary biologists for decades to come. A magisterial compendium . . . . Valentine offers a judicious evaluation of an astonishing array of evidence.—Richard Fortey, New Scientist Truly a magnum opus, On the Origin of Phyla has already taken its place as one of the classic scientific texts of the twentieth century, affecting the work of paleontologists, morphologists, and developmental, molecular, and evolutionary biologists for decades to come.—Ethology, Ecology & Evolution Valentine is one of the Renaissance minds of our time. . . . Darwin wisely called his best-known work On the Origin of the Species; the origin of the phyla is an even stickier problem, and Valentine deserves credit for tackling it at such breadth . . . . A magnificient book.—Stefan Bengtson, Nature
  define homology in biology: Bioinformatics for Beginners Supratim Choudhuri, 2014-05-09 Bioinformatics for Beginners: Genes, Genomes, Molecular Evolution, Databases and Analytical Tools provides a coherent and friendly treatment of bioinformatics for any student or scientist within biology who has not routinely performed bioinformatic analysis. The book discusses the relevant principles needed to understand the theoretical underpinnings of bioinformatic analysis and demonstrates, with examples, targeted analysis using freely available web-based software and publicly available databases. Eschewing non-essential information, the work focuses on principles and hands-on analysis, also pointing to further study options. - Avoids non-essential coverage, yet fully describes the field for beginners - Explains the molecular basis of evolution to place bioinformatic analysis in biological context - Provides useful links to the vast resource of publicly available bioinformatic databases and analysis tools - Contains over 100 figures that aid in concept discovery and illustration
  define homology in biology: Molecular Approaches To Ecology And Evolution R. deSalle, Bernd Schierwater, 1998-09-29 The last ten years have seen an explosion of activity in the application of molecular biological techniques to evolutionary and ecological studies. This volume attempts to summarize advances in the field and place into context the wide variety of methods available to ecologists and evolutionary biologists using molecular techniques. Both the molecular techniques and the variety of methods available for the analysis of such data are presented in the text. The book has three major sections - populations, species and higher taxa. Each of these sections contains chapters by leading scientists working at these levels, where clear and concise discussion of technology and implication of results are presented. The volume is intended for advanced students of ecology and evolution and would be a suitable textbook for advanced undergraduate and graduate student seminar courses. -- Publisher.
  define homology in biology: Biological Sequence Analysis Richard Durbin, Sean R. Eddy, Anders Krogh, Graeme Mitchison, 1998-04-23 Probabilistic models are becoming increasingly important in analysing the huge amount of data being produced by large-scale DNA-sequencing efforts such as the Human Genome Project. For example, hidden Markov models are used for analysing biological sequences, linguistic-grammar-based probabilistic models for identifying RNA secondary structure, and probabilistic evolutionary models for inferring phylogenies of sequences from different organisms. This book gives a unified, up-to-date and self-contained account, with a Bayesian slant, of such methods, and more generally to probabilistic methods of sequence analysis. Written by an interdisciplinary team of authors, it aims to be accessible to molecular biologists, computer scientists, and mathematicians with no formal knowledge of the other fields, and at the same time present the state-of-the-art in this new and highly important field.
  define homology in biology: Modularity in Development and Evolution Gerhard Schlosser, Gu nter P. Wagner, 2004-07 Modularity in Development and Evolution offers the first sustained exploration of modules from developmental and evolutionary perspectives. Contributors discuss what modularity is, how it can be identified and modeled, how it originated and evolved, and its biological significance. Covering modules at levels ranging from genes to colonies, the book focuses on their roles not just in structures but also in processes such as gene regulation. Among many exciting findings, the contributors demonstrate how modules can highlight key constraints on evolutionary processes. A timely synthesis of a crucial topic, Modularity in Development and Evolution shows the invaluable insights modules can give into both developmental complexities and their evolutionary origins.
  define homology in biology: Towards a Theory of Development Alessandro Minelli, Thomas Pradeu, 2014 Is it possible to explain and predict the development of living things? What is development? Articulate answers to these seemingly innocuous questions are far from straightforward. To date, no systematic, targeted effort has been made to construct a unifying theory of development. This novel work offers a unique exploration of the foundations of ontogeny by asking how the development of living things should be understood. It explores the key concepts of developmental biology, asks whether general principles of development can be discovered, and examines the role of models and theories. The two editors (one a biologist with long interest in the theoretical aspects of his discipline, the other a philosopher of science who has mainly worked on biological systems) have assembled a team of leading contributors who are representative of the scientific and philosophical community within which a diversity of thoughts are growing, and out of which a theory of development may eventually emerge. They analyse a wealth of approaches to concepts, models and theories of development, such as gene regulatory networks, accounts based on systems biology and on physics of soft matter, the different articulations of evolution and development, symbiont-induced development, as well as the widely discussed concepts of positional information and morphogenetic field, the idea of a 'programme' of development and its critiques, and the long-standing opposition between preformationist and epigenetic conceptions of development. Towards a Theory of Development is primarily aimed at students and researchers in the fields of 'evo-devo', developmental biology, theoretical biology, systems biology, biophysics, and the philosophy of science.
  define homology in biology: The Princeton Guide to Evolution David A. Baum, Douglas J. Futuyma, Hopi E. Hoekstra, Richard E. Lenski, Allen J. Moore, Catherine L. Peichel, Dolph Schluter, Michael C. Whitlock, 2017-03-21 The essential one-volume reference to evolution The Princeton Guide to Evolution is a comprehensive, concise, and authoritative reference to the major subjects and key concepts in evolutionary biology, from genes to mass extinctions. Edited by a distinguished team of evolutionary biologists, with contributions from leading researchers, the guide contains some 100 clear, accurate, and up-to-date articles on the most important topics in seven major areas: phylogenetics and the history of life; selection and adaptation; evolutionary processes; genes, genomes, and phenotypes; speciation and macroevolution; evolution of behavior, society, and humans; and evolution and modern society. Complete with more than 100 illustrations (including eight pages in color), glossaries of key terms, suggestions for further reading on each topic, and an index, this is an essential volume for undergraduate and graduate students, scientists in related fields, and anyone else with a serious interest in evolution. Explains key topics in some 100 concise and authoritative articles written by a team of leading evolutionary biologists Contains more than 100 illustrations, including eight pages in color Each article includes an outline, glossary, bibliography, and cross-references Covers phylogenetics and the history of life; selection and adaptation; evolutionary processes; genes, genomes, and phenotypes; speciation and macroevolution; evolution of behavior, society, and humans; and evolution and modern society
  define homology in biology: Systematics Ward C. Wheeler, 2012-05-29 Systematics: A Course of Lectures is designed for use in an advanced undergraduate or introductory graduate level course in systematics and is meant to present core systematic concepts and literature. The book covers topics such as the history of systematic thinking and fundamental concepts in the field including species concepts, homology, and hypothesis testing. Analytical methods are covered in detail with chapters devoted to sequence alignment, optimality criteria, and methods such as distance, parsimony, maximum likelihood and Bayesian approaches. Trees and tree searching, consensus and super-tree methods, support measures, and other relevant topics are each covered in their own sections. The work is not a bleeding-edge statement or in-depth review of the entirety of systematics, but covers the basics as broadly as could be handled in a one semester course. Most chapters are designed to be a single 1.5 hour class, with those on parsimony, likelihood, posterior probability, and tree searching two classes (2 x 1.5 hours).
  define homology in biology: Opportunities in Biology National Research Council, Division on Earth and Life Studies, Commission on Life Sciences, Board on Biology, Committee on Research Opportunities in Biology, 1989-01-01 Biology has entered an era in which interdisciplinary cooperation is at an all-time high, practical applications follow basic discoveries more quickly than ever before, and new technologiesâ€recombinant DNA, scanning tunneling microscopes, and moreâ€are revolutionizing the way science is conducted. The potential for scientific breakthroughs with significant implications for society has never been greater. Opportunities in Biology reports on the state of the new biology, taking a detailed look at the disciplines of biology; examining the advances made in medicine, agriculture, and other fields; and pointing out promising research opportunities. Authored by an expert panel representing a variety of viewpoints, this volume also offers recommendations on how to meet the infrastructure needsâ€for funding, effective information systems, and other supportâ€of future biology research. Exploring what has been accomplished and what is on the horizon, Opportunities in Biology is an indispensable resource for students, teachers, and researchers in all subdisciplines of biology as well as for research administrators and those in funding agencies.
  define homology in biology: The Hepaticae and Anthocerotae of North America East of the Hundredth Meridian Rudolf Mathias Schuster, 1969
  define homology in biology: Metaphysics and the Origin of Species Michael T. Ghiselin, 1997-01-01 In explaining his individuality thesis, Michael T. Ghiselin provides extended discussions of such philosophical topics as definition, the reality of various kinds of groups, and how we classify traits and processes. He develops and applies the implications for general biology and other sciences and makes the case that a better understanding of species and of classification in general puts biologists and paleontologists in a much better position to understand nature in general, and such processes as extinction in particular.
  define homology in biology: ,
  define homology in biology: Homology Brian K. Hall, 2013-10-22 The application of homology varies depending on the data being examined. This volume represents a state-of-the-art treatment of the different applications of this unifying concept. Chapters deal with homology on all levels, from molecules to behavior, and are authored by leading contributors to systematics, natural history, and evolutionary, developmental, and comparative biology. This paperback reprint of the original hardbound edition continues to commemorate the 150th anniversary of Sir Richard Owen's seminal paper distinguishing homology from analogy. - Commemoration of the 150th anniversary of Sir Richard Owen's seminal paper distinguishing homology from analogy - Contributors who are renowned leaders in comparative biology - Coverage that is both comprehensive and interdisciplinary
  define homology in biology: Science, Meaning, & Evolution Basarab Nicolescu, 1991 A thought-provoking study of the links or correspondences between modern research in quantum physics and the ideas of the great religious traditions of the past, with emphasis on the cosmology of Jacob Boehme. Includes selections from Boehme's writings.
DEFINE Definition & Meaning - Merriam-Webster
The meaning of DEFINE is to determine or identify the essential qualities or meaning of. How to use define in a sentence.

DEFINE Definition & Meaning | Dictionary.com
Define definition: to state or set forth the meaning of (a word, phrase, etc.).. See examples of DEFINE used in a sentence.

DEFINE | English meaning - Cambridge Dictionary
DEFINE definition: 1. to say what the meaning of something, especially a word, is: 2. to explain and describe the…. Learn more.

DEFINE definition and meaning | Collins English Dictionary
If you define something, you show, describe, or state clearly what it is and what its limits are, or what it is like. We were unable to define what exactly was wrong with him. [ VERB wh ]

Define - definition of define by The Free Dictionary
define - show the form or outline of; "The tree was clearly defined by the light"; "The camera could define the smallest object"

DEFINE - Definition & Meaning - Reverso English Dictionary
Define definition: state the meaning of a word or phrase. Check meanings, examples, usage tips, pronunciation, domains, related words.

define - Wiktionary, the free dictionary
May 13, 2025 · define (third-person singular simple present defines, present participle defining, simple past and past participle defined) To determine with precision; to mark out with …

Define: Definition, Meaning, and Examples - usdictionary.com
Dec 24, 2024 · The word "define" means to explain or clarify the meaning of something or to establish boundaries and parameters. It is a versatile word used in many contexts, from …

Define Definition & Meaning - YourDictionary
Define Sentence Examples The child's eagerness and interest carry her over many obstacles that would be our undoing if we stopped to define and explain everything. It will not be welfare (or, …

DEFINITION Definition & Meaning - Merriam-Webster
The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. How to use definition in a sentence.

DEFINE Definition & Meaning - Merriam-Webster
The meaning of DEFINE is to determine or identify the essential qualities or meaning of. How to use define in a sentence.

DEFINE Definition & Meaning | Dictionary.com
Define definition: to state or set forth the meaning of (a word, phrase, etc.).. See examples of DEFINE used in a sentence.

DEFINE | English meaning - Cambridge Dictionary
DEFINE definition: 1. to say what the meaning of something, especially a word, is: 2. to explain and describe the…. Learn more.

DEFINE definition and meaning | Collins English Dictionary
If you define something, you show, describe, or state clearly what it is and what its limits are, or what it is like. We were unable to define what exactly was wrong with him. [ VERB wh ]

Define - definition of define by The Free Dictionary
define - show the form or outline of; "The tree was clearly defined by the light"; "The camera could define the smallest object"

DEFINE - Definition & Meaning - Reverso English Dictionary
Define definition: state the meaning of a word or phrase. Check meanings, examples, usage tips, pronunciation, domains, related words.

define - Wiktionary, the free dictionary
May 13, 2025 · define (third-person singular simple present defines, present participle defining, simple past and past participle defined) To determine with precision; to mark out with …

Define: Definition, Meaning, and Examples - usdictionary.com
Dec 24, 2024 · The word "define" means to explain or clarify the meaning of something or to establish boundaries and parameters. It is a versatile word used in many contexts, from …

Define Definition & Meaning - YourDictionary
Define Sentence Examples The child's eagerness and interest carry her over many obstacles that would be our undoing if we stopped to define and explain everything. It will not be welfare (or, …

DEFINITION Definition & Meaning - Merriam-Webster
The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. How to use definition in a sentence.