psy·cho·bi·ol·o·gy (sī'kō-bī-ŏl'ə-jē)
n.

1. The study of the effects of cognition, emotions, and experience on animal physiology.
2. The school of psychology that interprets personality, behavior, and mental illness in terms of responses to interrelated biological, social, cultural, and environmental factors.

psychobiologic psy'cho·bi'o·log'ic (-bī'ə-lŏj'ĭk) or psy'cho·bi'o·log'i·cal (-ĭ-kəl) adj.
psychobiologically psy'cho·bi'o·log'i·cal·ly adv.
psychobiologist psy'cho·bi·ol'o·gist n.

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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