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This is a completely free and open dictionary with over 60,000 biology terms. It uses the wiki concept, so that anyone can make a contribution.

If you discover a term that you think should be in our dictionary, you can easily add it here. To make your contribution, you must first create an account. Registration is quick, completely free, and also allows you to participate in our discussion forums.

Popular Pages

2. Codominance‏‎ (189,619 views)
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6. Osmosis‏‎ (103,123 views)
7. Population‏‎ (99,105 views)
8. Living thing‏‎ (97,223 views)
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10. Niche‏‎ (95,872 views)
11. Facilitated diffusion‏‎ (89,503 views)
12. Analogous structures‏‎ (87,967 views)
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15. Concentration gradient‏‎ (85,317 views)
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17. Ecosystem‏‎ (82,101 views)
18. Organism‏‎ (76,839 views)
19. Phenotype‏‎ (74,518 views)
20. Feedback mechanism‏‎ (73,615 views)
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22. Absorption‏‎ (71,203 views)
23. Haploid‏‎ (70,841 views)
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27. Producer‏‎ (64,556 views)
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30. Active transport‏‎ (62,404 views)
31. Cell‏‎ (59,318 views)
32. Diploid‏‎ (59,082 views)
33. Nucleus‏‎ (57,681 views)
34. Phenotypic ratio‏‎ (57,671 views)
35. Evolution‏‎ (57,244 views)
36. Homologous structures‏‎ (57,044 views)
37. Branches of biology‏‎ (54,988 views)
38. Asexual reproduction‏‎ (54,880 views)
39. Polygenic trait‏‎ (54,006 views)
40. Protein‏‎ (52,837 views)
41. Mutation‏‎ (52,387 views)
42. Sexual reproduction‏‎ (51,149 views)
43. Enzyme‏‎ (50,765 views)
44. Stimulus‏‎ (50,361 views)
45. Cellular respiration‏‎ (49,876 views)
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