noun \ˌfiz-ē-ˈäl-ə-jē\
plural phys·i·ol·o·gies

Definition of PHYSIOLOGY

: a branch of biology that deals with the functions and activities of life or of living matter (as organs, tissues, or cells) and of the physical and chemical phenomena involved—compare anatomy 1, morphology 1
: the organic processes and phenomena of an organism or any of its parts or of a particular bodily process <the physiology of the thyroid gland>
: a treatise on physiology

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