Synonyms: agonist
Definition: (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
Similar words: drug
Definition: a substance that is used as a medicine or narcotic
Synonyms: agonist
Definition: a muscle that contracts while another relaxes
Usage: when bending the elbow the biceps are the agonist
Similar words: antagonistic muscle
Definition: (physiology) a muscle that opposes the action of another
Usage: the biceps and triceps are antagonistic muscles
Synonyms: agonist
Definition: someone involved in a contest or battle (as in an agon)
Similar words: contestant
Definition: a person who participates in competitions
Synonyms: agonist, protagonist
Definition: the principal character in a work of fiction
Similar words: fictional character, fictitious character, character
Definition: an imaginary person represented in a work of fiction (play or film or story)
Usage: she is the main character in the novel