Medical Dictionary


noun in·stinct \ˈin-ˌstiŋ(k)t\

Medical Definition of INSTINCT

:  a largely inheritable and unalterable tendency of an organism to make a complex and specific response to environmental stimuli without involving reason
:  behavior that is mediated by reactions below the conscious level
July 04, 2015
stringent Hear it
rigorous, strict, or severe
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