enkephalin

noun
en·keph·a·lin | \in-ˈke-fə-lən, -(ˌ)lin, en-\

Definition of enkephalin 

: either of two pentapeptides with opiate and analgesic activity that occur naturally especially in the brain and have a marked affinity for opiate receptors — compare endorphin

Examples of enkephalin in a Sentence

Recent Examples on the Web

During that time, your body tends to produce less endorphins and enkephalins, which are natural pain-killers, than at any other time of day, according to the National Headache Foundation. Korin Miller, SELF, "6 Causes of Morning Headaches," 24 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'enkephalin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of enkephalin

1975, in the meaning defined above

History and Etymology for enkephalin

enkephal- (alteration of encephal-) + -in

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The first known use of enkephalin was in 1975

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More Definitions for enkephalin

enkephalin

noun
en·keph·a·lin | \in-ˈkef-ə-lən, -(ˌ)lin \

Medical Definition of enkephalin 

: either of two pentapeptide endorphins:

a : leucine-enkephalin

b : methionine-enkephalin

More from Merriam-Webster on enkephalin

Britannica.com: Encyclopedia article about enkephalin

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