Irritant1. (n.) Something producing irritation or inflammation; as pollen is an eye irritant.
2. (a.) Rendering null and void; conditionally invalidating.
3. (n.) That which irritates or excites.
4. (n.) Any agent by which irritation is produced; as, a chemical irritant; a mechanical or electrical irritant.
5. (n.) A poison that produces inflammation.
Thesaurus Entries
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