'Biology' definitions:

Definition of 'biology'

From: WordNet
noun
The science that studies living organisms [syn: biology, biological science]
noun
Characteristic life processes and phenomena of living organisms; "the biology of viruses"
noun
All the plant and animal life of a particular region [syn: biota, biology]

Definition of 'Biology'

From: GCIDE
  • Biology \Bi*ol"o*gy\, n. [Gr. bi`os life + -logy: cf. F. biologie.] The science of life; that branch of knowledge which treats of living matter as distinct from matter which is not living; the study of living tissue. It has to do with the origin, structure, development, function, and distribution of animals and plants. [1913 Webster]