[bey-tuh-en-dawr-fin or, esp. British, bee-]
a potent endorphin released by the anterior pituitary gland in response to pain, trauma, exercise, or other forms of stress.

1975–80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

beta-endorphin n.
An endorphin produced by the pituitary gland that is a potent pain suppressant.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences for betaendorphin
Pain is reduced by the increases of acetylcholine and betaendorphin.
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