Medical Definition of antagonism
: opposition in physiological action:a: opposing action in the effect of contraction of muscles (as the extensors and flexors of a part)b: interaction of two or more substances such that the action of any one of them on living cells or tissues is lessened (as by interference with the uptake or by an opposing physiological reaction)—compare synergism
Learn More about antagonism
Dictionary: Definition of "antagonism" Thesaurus: All synonyms and antonyms for "antagonism" Spanish Central: Translation of "antagonism" Nglish: Translation of "antagonism" for Spanish speakers Britannica English: Translation of "antagonism" for Arabic speakers Britannica.com: Encyclopedia article about "antagonism"
Seen and Heard
What made you want to look up antagonism? Please tell us where you read or heard it (including the quote, if possible).