physiologist
noun
phys·i·ol·o·gist
ˌfi-zē-ˈä-lə-jist
plural physiologists
: a person specializing in the biological study of the functions and processes of living organisms and their parts : a biologist specializing in physiology
Beall also compared the percentage of hemoglobin in each person's blood that carries oxygen—a value known by physiologists as oxygen saturation.—Jessica Gorman
The "fight or flight" reaction has long been known to physiologists: the heart beats faster, the muscles are readied and the body is primed in the most primitive of survival instincts.—David Golman
Every exercise program should be personally prescribed by a professional—such as a sports-medicine physician or an exercise physiologist—and should aim at improving flexibility, strength and cardiovascular functioning.—Deborah Blumenthal
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Merriam-Webster unabridged
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