of or pertaining to physiology.
consistent with the normal functioning of an organism.
Also, physiologic.

1600–10; physiolog(y) + -ical

physiologically, adverb
nonphysiologic, adjective
nonphysiological, adjective
nonphysiologically, adverb
unphysiological, adjective
unphysiologically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
physiological (ˌfɪzɪəˈlɒdʒɪkəl)
1.  of or relating to physiology
2.  of or relating to normal healthful functioning; not pathological

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1600, from physiology.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

physiological phys·i·o·log·i·cal (fĭz'ē-ə-lŏj'ĭ-kəl) or phys·i·o·log·ic (-ĭk)
Abbr. phys.

  1. Of or relating to physiology.

  2. Being in accord with or characteristic of the normal functioning of a living organism.

  3. Relating to the action of a drug when given to a healthy person, as distinguished from its therapeutic action.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Depression is a physiologically based medical disorder which also has mental
Wheat is physiologically different from maize in two main ways, making big
  genetic improvements harder to achieve.
Rats are not people, of course-though what holds physiologically for one often
  holds for the other.
However, for the moment, the evidence suggests that neither marijuana nor
  amphetamines are physiologically addictive.
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