transcription, транскрипция: [ -nist ]
noun
Date: 1575
1. : one that contends with or opposes another : adversary , opponent
2. : an agent of physiological antagonism: as
a. : a muscle that contracts with and limits the action of an agonist with which it is paired — called also antagonistic muscle
b. : a chemical that acts within the body to reduce the physiological activity of another chemical substance (as an opiate) ; especially : one that opposes the action on the nervous system of a drug or a substance occurring naturally in the body by combining with and blocking its nervous receptor — compare agonist 2b