inhibitor

or in·hib·it·er

[in-hib-i-ter]

noun

a person or thing that inhibits.
Chemistry. a substance that decreases the rate of or stops completely a chemical reaction.
any impurity in a mineral that prevents luminescence.Compare activator(def 3).
Rocketry. an inert antioxidant used with solid propellants to inhibit burning on certain surfaces.

Nearby words

  1. inhesion,
  2. inhibin,
  3. inhibit,
  4. inhibited,
  5. inhibition,
  6. inhibitory,
  7. inhibitory fiber,
  8. inhibitory nerve,
  9. inhibitory obsession,
  10. inhibitory postsynaptic potential

Origin of inhibitor

First recorded in 1865–70; inhibit + -or2

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for inhibiter

inhibitor

noun

Also called: inhibiter a person or thing that inhibits
Also called: anticatalyst a substance that retards or stops a chemical reactionCompare catalyst
biochem
  1. a substance that inhibits the action of an enzyme
  2. a substance that inhibits a metabolic or physiological processa plant growth inhibitor
any impurity in a solid that prevents luminescence
an inert substance added to some rocket fuels to inhibit ignition on certain surfaces
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for inhibiter

inhibitor

n.

1868 in scientific use (earlier as a Scottish legal term), agent noun in Latin form from inhibit.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for inhibiter

inhibitor

n.

A substance that restrains or retards physiological, chemical, or enzymatic action.
A nerve whose stimulation represses activity.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.