psy·cho·bi·ol·o·gy 
(sī′kō-bī-ŏlə-jē)
(sī′kō-bī-ŏlə-jē)n.
The branch of psychology that studies the biological foundations of behavior, emotions, and mental processes. Also called biopsychology.
psy′cho·bi′o·logic (-bī′ə-lŏjĭk), psy′cho·bi′o·logi·cal (-ĭ-kəl) adj.
psy′cho·bi′o·logi·cal·ly adv.
psy′cho·bi·olo·gist n.
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- Indo-European root: perkwu-
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- Indo-European root: peuk-
- Indo-European root: peuə-
- Indo-European root: pezd-