any of several peptides secreted in the brain that have a pain-relieving effect like that of morphine
Origin of endorphinfrom end(ogenous m)orphin(elike substance) or end(ogenous m)orphin(e)
Any of a group of peptide hormones that bind to opioid 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’.