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irritant: Meaning and Definition of

ir•ri•tant

Pronunciation: (ir'i-tnt), [key]
— adj.
  1. tending to cause irritation; irritating.
—n.
  1. anything that irritates.
  2. a biological, chemical, or physical agent that stimulates a characteristic function or elicits a response, esp. an inflammatory response.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
irritable heart irritate
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