1. The principal character in a work of fiction
   - protagonist 
2. Someone involved in a contest or battle (as in an agon) 
3. A muscle that contracts while another relaxes
   "when bending the elbow the biceps are the agonist" 
4. (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction

Derived forms: agonists

See also: agonistic, agony

Type of: antagonistic muscle, character, contestant, drug, fictional character, fictitious character

Antonym: antagonist

Encyclopedia: Agonist

• incipience
• incipiency
• incipient
• incise
• incised
• incision
• incisive
• incisively
• incisiveness
• incisor
• incisura
• incisure
• incitation
• incite
• incitement
• inciter
• incitive
• incivility
• incl.
• inclemency
• inclement
• inclementness
• inclinable
• inclination
• inclination of an orbit