Dictionary.com

irritant

[ ir-i-tnt ]
/ ˈɪr ɪ tnt /
Save This Word!

adjective
tending to cause irritation; irritating.
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.
QUIZ
TEST YOUR MERIT ON THESE NEW WORDS IN 2021
The Dictionary added new words and definition to our vast collection, and we want to see how well-versed you are in the formally recognized new lingo. Take the quiz!
Question 1 of 8
What does JEDI stand for?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of irritant

1630–40; <Latin irrītant- (stem of irrītāns), present participle of irrītāre to irritate; see -ant

OTHER WORDS FROM irritant

ir·ri·tan·cy, nounnon·ir·ri·tan·cy, nounnon·ir·ri·tant, adjectiveun·ir·ri·tant, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use irritant in a sentence

British Dictionary definitions for irritant

irritant
/ (ˈɪrɪtənt) /

adjective
causing irritation; irritating
noun
something irritant

Derived forms of irritant

irritancy, noun
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

Medical definitions for irritant

irritant
[ ĭrĭ-tənt ]

adj.
Causing irritation, especially physical irritation.
n.
A source of irritation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK