un-irritant

irritant

[ir-i-tnt]
adjective
1.
tending to cause irritation; irritating.
noun
2.
anything that irritates.
3.
Physiology, Pathology. a biological, chemical, or physical agent that stimulates a characteristic function or elicits a response, especially an inflammatory response.

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

irritancy, noun
nonirritancy, noun
nonirritant, adjective
unirritant, adjective
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World English Dictionary
irritant (ˈɪrɪtənt)
 
adj
1.  causing irritation; irritating
 
n
2.  something irritant
 
'irritancy
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

irritant ir·ri·tant (ĭr'ĭ-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.
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