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inhibitor

[in-hib-i-ter] /ɪnˈhɪb ɪ tər/
noun
1.
a person or thing that inhibits.
2.
Chemistry. a substance that decreases the rate of or stops completely a chemical reaction.
3.
any impurity in a mineral that prevents luminescence.
Compare activator (def 3).
4.
Rocketry. an inert antioxidant used with solid propellants to inhibit burning on certain surfaces.
Also, inhibiter.
Origin
1865-1870
1865-70; inhibit + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for inhibitor
  • There seems to be no inhibitor to immediate production.
  • Allopurinol is a xanthine oxidase inhibitor that blocks uric acid production.
  • Tyrosine kinase inhibitor drugs block proteins involved in tumor cell growth and production.
  • Tyrosine kinase inhibitor drugs block the cell signals that trigger cancer growth.
  • Longevity of the corrosion inhibitor during storage storage.
  • Carbaryl is a cholinesterase inhibitor and is toxic to humans.
British Dictionary definitions for inhibitor

inhibitor

/ɪnˈhɪbɪtə/
noun
1.
Also called inhibiter. a person or thing that inhibits
2.
Also called anticatalyst. a substance that retards or stops a chemical reaction Compare catalyst
3.
(biochem)
  1. a substance that inhibits the action of an enzyme
  2. a substance that inhibits a metabolic or physiological process: a plant growth inhibitor
4.
any impurity in a solid that prevents luminescence
5.
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
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Word Origin and History for 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
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inhibitor in Medicine

inhibitor in·hib·i·tor or in·hib·it·er (ĭn-hĭb'ĭ-tər)
n.

  1. A substance that restrains or retards physiological, chemical, or enzymatic action.

  2. 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.
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