Electron micrograph of the rust mite Aceria anthocoptes
The word biology can have several different meanings:
the scientific study of living things and vital processes. The field is composed of numerous subdisciplines, including such fields as zoology, botany, genetics, medicine, agriculture, anatomy, and histology.
the rules, life processes, or phenomena relating to a particular organism or class of organisms (e.g., "the ~ of plants").
[syn. biota] The flora and fauna of a particular era, environment, geographic region, or biome, taken as a whole.
Synonyms: Life science; biological science.
Derivation: Gk. bios, meaning "life" + Gk logos meaning "explanation, law, theory, reasoning, or speech" (in modern usage within a scientific context, the suffix -logy can usually be taken as meaning "the study of").