[ 'agənɪst ]
■ noun
1》 Biochemistry a substance which initiates a physiological response when combined with a receptor.
2》 Anatomy a muscle whose contraction moves a part of the body directly.
3》 a prot~.
Derivatives
agonism noun
Origin
early 20th cent.: from Gk agōnistēs 'contestant', from agōn 'contest'; cf. ant~ .