endorphins (singular, endorphin): the general term to refer to all of the body's own endogenous morphinelike substances. In chemical structure, they are neuropeptides. They are active as neurotransmitters and neuromodulators.
See also neuropeptide;
neurotransmitter;
enkephalin; obsolete terms:
endomorphins;
singular,
endomorphin.
Dictionary of Sexology Project: Main Index