any of several peptides secreted in the brain that have a pain-relieving effect like that of morphine
Any of a group of peptide hormones that bind to opiate receptors and act as neurotransmitters. Endorphins reduce the sensation of pain and affect emotions.
Origin of endorphinendo(genous) + (mo)rphin(e).
From French endorphine, from endo(gène) ‘endogenous’ + (mo)rphine ‘morphine’.