a compound which binds to a receptor but is not successful at facilitating the same level of reaction as a full agonist at the same receptor site or puts out only a portion of the action put out by the endogenous neurotransmitter which it imitates.
a compound which binds to a receptor but is not successful at facilitating the same level of reaction as a full agonist at the same receptor site or puts out only a portion of the action put out by the endogenous neurotransmitter which it imitates.