agonist Meaning, Definition & Usage
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noun the principal character in a work of fiction
protagonist.
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noun someone involved in a contest or battle (as in an agon)
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noun a muscle that contracts while another relaxes
- when bending the elbow the biceps are the agonist
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noun (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
WordNet
Ag"o*nist noun
Etymology
Gr. .Definitions
One who contends for the prize in public games. R.