English to English
noun
- the principal character in a work of fiction
source: WordNet 3.0
- someone involved in a contest or battle (as in an agon)
source: WordNet 3.0
- a muscle that contracts while another relaxes
When bending the elbow the biceps are the agonist.
source: WordNet 3.0
- (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
source: WordNet 3.0
- One who contends for the prize in public games.
source: Webster 1913