Etymology
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physiological (adj.)

c. 1600, "of or pertaining to natural science" (a sense now obsolete), from physiology + -ical. From 1814 as "of or pertaining to physiology, relating to the functions and properties of living bodies." Related: Physiologically.

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Definitions of physiological

physiological (adj.)
of or relating to the biological study of physiology;
Pavlov's physiological theories
physiological psychology
physiological (adj.)
of or consistent with an organism's normal functioning;
physiological processes
Synonyms: physiologic
From wordnet.princeton.edu