substance P

noun

Definition of substance P 

: a neuropeptide that consists of 11 amino acid residues, that is present in the nervous system and gastrointestinal tract, that causes the contraction of smooth muscle and dilation of blood vessels, and that acts as a potent neurotransmitter especially in the transmission of signals from pain receptors

First Known Use of substance P

1934, in the meaning defined above

Keep scrolling for more

Learn More about substance P

Share substance P

Statistics for substance P

Look-up Popularity

Time Traveler for substance P

The first known use of substance P was in 1934

See more words from the same year

Keep scrolling for more

More Definitions for substance P

substance P

noun

Medical Definition of substance P 

: a neuropeptide that consists of 11 amino acid residues, that is widely distributed in the brain, spinal cord, and peripheral nervous system, and that acts across nerve synapses to produce prolonged postsynaptic excitation

Comments on substance P

What made you want to look up substance P? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

occurring twice a year or every two years

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!