1. [Syn. biological science] the scientific study of life
2. the branch of science concerned with the structure, function, growth, evolution, and distribution of living and non-living organisms
3. the characteristic life processes and phenomena of organisms, e.g. the biology of viruses
4. [Syn. biota] all the plants and animals of a specific region, e.g. the biology of Pennsylvania
5. the way of learning the way of life and its interactions
Biology has various sub-disciplines, e.g. Botany, the study of plants, Zoology, the study of animals; and Microbiology, the study of microorganisms.
Word origin: from Greek: bios "life" (see bio-) and logia "study of"
Related forms: biological (adjective)
See also: Branches of Biology