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Biology Dictionary
COVID-19 Tracker
Topics
Biology A-Z
Cell
Biochemistry
Human
Genetics
Zoology
Botany
Ecology
Anatomy & Physiology
Molecular
Microbiology
Neuroscience
Articles
Animal Kingdom
Tutorials
AP Biology
NGSS High School
News & Stories
Latest News
Editors’ Picks
Weekly Digest
Fun
Quotes about Biology
Zoology
Abdomen
August 14, 2017
Abdominal Cavity
March 19, 2017
Abiogenesis
January 31, 2017
Acoelomate
October 25, 2018
Adaptation
June 20, 2018
Adaptive Radiation
May 31, 2019
Alimentary Canal
February 27, 2017
Allantois
April 4, 2017
Allopatric Speciation
January 10, 2017
Amniotes
April 17, 2019
Analogous Structures
October 30, 2016
Anaphase I
May 29, 2019
Animal Cell
April 4, 2017
Apoptosis
June 6, 2017
Arthropod
March 20, 2017
Artificial Selection
June 18, 2019
Asexual Reproduction
November 5, 2016
Atavism
June 9, 2017
Benthos
December 13, 2016
Bilateral Symmetry
February 14, 2017
Binomial Nomenclature
January 20, 2017
Biodiversity
May 31, 2019
Biogeography
May 5, 2017
Bioluminescence
January 21, 2018
Cardiac Cycle
February 12, 2017
Carrion
February 24, 2018
Carrying Capacity
November 15, 2016
Cell Differentiation
June 20, 2018
Cell Theory
December 15, 2016
Chitin
January 13, 2017
Chordate
November 27, 2016
Chyme
February 13, 2017
Clade
January 26, 2017
Cladistics
June 12, 2017
Cladogram
January 13, 2017
Classical Conditioning
June 9, 2020
Cloaca
July 4, 2017
Codominance
December 20, 2016
Coevolution
December 25, 2017
Commensalism
December 4, 2016
Common Descent
June 12, 2017
Community
December 29, 2016
Competition
October 7, 2018
Complete Dominance
January 4, 2017
Complete Metamorphosis
April 25, 2019
Consumer
May 21, 2019
Control Group
December 15, 2016
Controlled Experiment
February 12, 2017
Convergent Evolution
January 12, 2017
Copepod
February 11, 2018
Coronal Plane
February 21, 2017
Crenation
November 12, 2016
Curare
February 20, 2017
Density Dependent Factors
October 7, 2018
Density Independent Factors
October 7, 2018
Detritivore
March 13, 2017
Deuterostome
April 14, 2017
Diastole
February 12, 2017
Dichotomous Key
March 20, 2017
Digastric Muscle
December 8, 2017
Dihybrid Cross
January 23, 2018
Directional Selection
January 20, 2017
Disruptive Selection
February 9, 2017
Divergent Evolution
January 13, 2017
DNA
May 27, 2017
Domain
April 17, 2019
Dominant Trait
January 13, 2017
Dorsal Cavity
April 17, 2019
Ecdysis
May 18, 2017
Echinoderm
July 30, 2017
Ecological Pyramid
November 23, 2016
Ecological Succession
January 31, 2017
Ecology
December 9, 2016
Ecosystem
May 21, 2019
Ectotherm
February 26, 2018
Embryo
July 4, 2017
Embryology
January 23, 2018
Endoskeleton
April 5, 2017
Energy Pyramid
January 13, 2017
Excretion
April 17, 2019
Exoskeleton
April 5, 2017
Experimental Group
December 21, 2016
Extinction
June 20, 2018
Extirpation
April 5, 2017
Extremophile
May 26, 2017
F1 Generation
January 6, 2018
Facultative Anaerobe
October 7, 2018
Fauna
May 20, 2018
Fecundity
February 10, 2017
Feedback Inhibition
February 12, 2017
Fertilization
December 4, 2016
Fetus
July 4, 2017
Fossil Record
January 7, 2018
Fossils
May 22, 2019
Founder Effect
January 31, 2017
Fundamental Niche
December 4, 2016
Gastrulation
January 25, 2017
Gene Flow
September 17, 2018
Gene Pool
February 13, 2017
Genetic Drift
December 15, 2016
Genetic Equilibrium
January 7, 2018
Genetic Variation
January 7, 2018
Genetics
May 2, 2017
Genotype
December 4, 2016
Genus
January 20, 2017
Gonad
November 12, 2016
Gradualism
April 17, 2019
Head
July 26, 2017
Hematopoiesis
June 12, 2017
Heredity
December 21, 2016
Hermaphrodite
December 9, 2016
Heterotroph
December 15, 2016
Histology
January 23, 2018
Homologous
November 3, 2016
Homologous Structures
November 14, 2016
Homoplasy
November 10, 2016
Human Biology
May 26, 2017
Independent Assortment
December 29, 2016
Intercostal Muscles
November 18, 2016
Intertidal Zone
June 5, 2017
Invertebrate
May 18, 2017
Island Biogeography
July 6, 2017
Keystone Species
December 25, 2017
Kingdom
June 14, 2018
Law of Segregation
January 27, 2017
Littoral Zone
June 13, 2017
Lymph
April 17, 2019
Macroevolution
June 14, 2017
Marine Biology
June 6, 2017
Marine Ecosystem
June 7, 2017
Marine Snow
February 11, 2018
Mass Extinction
June 20, 2018
Mesentery
May 13, 2018
Metamorphosis
July 4, 2017
Metaphase I
June 18, 2019
Microbiology
May 15, 2017
Microevolution
May 30, 2017
Miosis
February 10, 2017
Motility
March 3, 2017
Muscle
December 8, 2017
Mutation
April 5, 2017
Mutualism
December 18, 2016
Mycology
January 23, 2018
Natural Selection
November 28, 2016
Negative Feedback
July 30, 2017
Niche
December 20, 2016
Notochord
March 15, 2018
Omnivore
December 9, 2016
Open Circulatory System
April 27, 2017
Organism
December 6, 2016
Overpopulation
August 19, 2017
Oviparous
November 10, 2016
Ovipositor
June 25, 2017
Paraphyletic
October 7, 2018
Parasitism
November 29, 2016
Parenchyma
May 26, 2017
Pathology
April 27, 2017
Perspiration
February 14, 2017
Phalanx
December 23, 2016
Phenotype
November 28, 2016
Phylogeny
January 11, 2017
Phylum
January 31, 2017
Placenta
July 25, 2017
Polyp
January 3, 2017
Population
December 21, 2016
Predation
October 23, 2016
Predator Prey Relationship
April 17, 2019
Primary Consumer
February 14, 2017
Primary Succession
October 27, 2016
Prone Position
February 24, 2018
Prophase I
May 29, 2019
Prophase II
June 18, 2019
Protostome
April 5, 2017
Protozoa
January 13, 2017
Pseudocoelomate
February 20, 2017
Punctuated Equilibrium
November 3, 2016
Punnett Square
November 6, 2016
Radial Symmetry
June 12, 2020
Receptor
February 27, 2018
Sagittal Plane
February 21, 2017
Seashell
June 5, 2017
Secondary Consumer
December 9, 2016
Secondary Succession
November 10, 2016
Selective Breeding
November 12, 2016
Seminal Vesicle
May 25, 2020
Sessile
January 26, 2017
Sex Chromosomes
November 16, 2016
Sexual Dimorphism
April 22, 2018
Sexual Intercourse
February 12, 2017
Sexual Reproduction
November 12, 2016
Skin
July 9, 2017
Speciation
November 23, 2016
Species
November 28, 2016
Spirochete
April 14, 2017
Spontaneous Generation
May 30, 2017
Stabilizing Selection
June 20, 2018
Stroma
November 18, 2016
Symbiosis
November 23, 2016
Sympatric Speciation
February 12, 2017
Synapomorphy
September 17, 2018
Systole
February 12, 2017
Taxonomy
March 19, 2017
Teeth
September 7, 2017
Tertiary Consumer
March 19, 2017
Thoracic Cavity
February 21, 2017
Threatened Species
May 20, 2018
Transverse Plane
February 21, 2017
Trophic Level
November 26, 2016
Tropism
February 9, 2017
True Breeding
December 4, 2016
Urinary Bladder
June 12, 2017
Ventral Cavity
April 17, 2019
Vertebral Column
February 12, 2017
Vestigial Structures
January 20, 2017
Virus
August 25, 2018
Viviparous
January 20, 2017
Vivisection
May 18, 2017
Zonation
March 19, 2017
Zoology
April 27, 2017
Zooplankton
February 11, 2018
