irritant
Americanadjective
noun
-
anything that irritates.
-
Physiology, Pathology. a biological, chemical, or physical agent that stimulates a characteristic function or elicits a response, especially an inflammatory response.
adjective
noun
Other Word Forms
Etymology
Origin of irritant
1630–40; < Latin irrītant- (stem of irrītāns ), present participle of irrītāre to irritate; see -ant
Compare meaning
How does irritant compare to similar and commonly confused words? Explore the most common comparisons:
Explanation
An irritant is a substance that causes pain, itching, or discomfort. Chlorine, which is commonly used in swimming pools and hot tubs, is an irritant that dries out skin and reddens eyes. A physical irritant does just what it sounds like: it irritates your body in some way. For some people, any scent in hand soap or laundry detergent acts as an irritant, causing itchy rashes. A figurative irritant is someone or something that bugs you. The noise your brother makes when he slurps his cereal every morning might, for example, be an irritant. The word is related to irritate, sharing the Latin root irritare, "provoke."
Vocabulary lists containing irritant
John F. Kennedy's Address to the American People on the Cuban Missile Crisis (1962)
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"Introduction to Homeland Security," Vocabulary from Chapter 3
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Additional Articles on DDT and Malaria
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“The molecular response is the same. Irritant molecules activate TRPA1,” says Sven-Eric Jordt, who studies pain response pathways at Duke University.
From Slate • Apr. 9, 2015
Irritant smokes present a different problem and may be invented in deadlier forms than are at present known but, as they are invented, a counter-invention is sure to come.
From Time Magazine Archive
Manhattan's literary sundowners, who read book reviews far more avidly than books, rate The New Yorker book critic Anthony West as a man with a high IQ�or Irritant Quotient.
From Time Magazine Archive
Others there were, casual visitors, and of course it did not escape the squawks and squabbles of the English sparrow,— "Irritant, iterant, maddening bird."
From Little Brothers of the Air by Miller, Olive Thorne
Irritant, astringent, and tonic; two to four drachms.
From Cattle and Their Diseases Embracing Their History and Breeds, Crossing and Breeding, And Feeding and Management; With the Diseases to which They are Subject, And The Remedies Best Adapted to their Cure by Jennings, Robert
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
