2. (Anat.)
Defn: A muscle which acts in opposition to another; as a flexor, which bends a part, is the antagonist of an extensor, which extends it.
3. (Med.)
Defn: A medicine which opposes the action of another medicine or of a poison when absorbed into the blood or tissues.
Syn.
— Adversary; enemy; opponent; toe; competitor. See Adversary.
ANTAGONIST
An*tag"o*nist, a.
Defn: Antagonistic; opposing; counteracting; as, antagonist schools of philosophy.
ANTAGONISTIC; ANTAGONISTICAL
An*tag`o*nis"tic, An*tag`o*nis"tic*al, a.
Defn: Opposing in combat, combating; contending or acting against;
as, antagonistic forces.
— An*tag`o*nis"tic*al*ly, adv.
They were distinct, adverse, even antagonistic. Milman.
ANTAGONIZE
An*tag"o*nize, v. t. [imp. & p. p. Antagonized; p. pr. & vb. n.
Antagonozing.] Etym: [Gr. Antagonism.]