endorphin

(en dôrfin)

noun

any of several peptides secreted in the brain that have a pain-relieving effect like that of morphine

See endorphin in American Heritage Dictionary 4

noun
Any of a group of peptide hormones that bind to opiate receptors and are found mainly in the brain. Endorphins reduce the sensation of pain and affect emotions.

Origin:

Origin: endo(genous)

Origin: + (mo)rphin(e)

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