beta-endorphin

Definition / meaning of beta-endorphin

A substance produced in the brain, especially in the pituitary gland, that blocks the sensation of pain. It is produced in response to pain, exercise, and other forms of stress. It is a type of polypeptide hormone.

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Find More About 'beta-endorphin'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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