Literally meaning: “against fighter”
Origin: Anc Greek
ανταγωνιστής/antagonistis(= competitor, opponent, enemy) >αντί-/anti- (=prefix meaning opposed to, against, instead) + αγωνιστής/agonistis(=fighter, combatant) > αγών/agon(=contest, fight)
- (pharmacology) Antagonist is a chemical substance that binds to a neuronal receptor inhibiting the sugnal triggered by an agonist (stimulator of receptor). E.g heroin overdose is usually treated with an opiod anatagonist, such as naloxone
- (microbiology) An antagonist is an organism that competes another organism by the production of antibiotis or lytic enzymes.