endorphin

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endorphin beta-endorphin -endorphin

Main Entry: en·dor·phin
Pronunciation: en-dr-fn
Function: noun
: any of a group of endogenous peptides (as enkephalin and dynorphin) found especially in the brain that bind chiefly to opiate receptors and produce some of the same pharmacological effects (as pain relief) as those of opiates; specifically : BETA-ENDORPHIN