substance P

Origin of substance P

earlier standard preparation P (1931); the initial is unexplained by the substance's discoverers
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

substance p in Medicine

substance P

n.
  1. 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 Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.