Medical Dictionary


vt coun·ter·act \ˌkant-ə-ˈrakt\

Medical Definition of COUNTERACT

:  to make ineffective or restrain or neutralize the usually ill effects of by an opposite force <vitamin K counteracts the effects of warfarin>
coun·ter·ac·tion \-ˈrak-shən\ noun


July 07, 2015
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