1. (n.) The study of the biological processes of living organisms\; the study of the processes incidental to, and characteristic of, life.

2. (n.) A treatise on physiology.

aerobiology agrobiology anatomy astrobiology bacteriology biochemics biochemistry biochemy bioecology biological science biology biometrics biometry bionics bionomics biophysics botany cell physiology cryobiology cybernetics cytology ecology electrobiology embryology enzymology ethnobiology exobiology genetics gnotobiotics life science microbiology molecular biology pharmacology radiobiology taxonomy virology xenobiology zoology