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substance P
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noun
a small peptide released upon stimulation in the nervous system and involved in regulation of the pain threshold.
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Origin of substance P
Earlier standard preparation P (1931); the initial is unexplained by the substance's discoverers
Words nearby substance P
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use substance P in a sentence
Medical definitions for substance P
substance P
n.
A short-chain polypeptide that functions as a neurotransmitter especially in the transmission of pain impulses from peripheral receptors to the central nervous system.
The American Heritage® Stedman's Medical Dictionary
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