Meaning of ANTAGONIST in English

ANTAGONIST

noun Date: 1575 one that contends with or opposes another ; adversary , opponent , an agent of physiological antagonism: as, a muscle that contracts with and limits the action of an agonist with which it is paired, a chemical that acts within the body to reduce the physiological activity of another chemical substance (as an opiate)

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.