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physiology

phys·i·ol·o·gy [ fìzzee ólləjee ]


noun 
Definition:
 
1. study of functioning of living things: the branch of biology that deals with the internal workings of living things, including functions such as metabolism, respiration, and reproduction, rather than with their shape or structure

2. body's internal processes: the way a particular body or organism works

[Mid-16th century. Directly or via French< Latin physiologia< Greek phusiologia< phusis "nature" (see physics)]

phys·i·ol·o·gist noun
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