Definition of "neuropeptide" []

• Any of various short-chain peptides found in brain tissue, such as endorphins. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Cortisol stimulates a brain chemical called neuropeptide Y, which boosts carbohydrate cravings."
• "The eating chemicals driven by NPY a protein called neuropeptide Y."
• "Galanin is a brain chemical called a neuropeptide, which previous research has identified as crucial to determining appetite for carbohydrate and fat-rich food."