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The Collaborative International Dictionary
Pure irritant

Irritant \Ir"ri*tant\, n. [Cf. F. irritant.]

  1. That which irritates or excites.

  2. (Physiol. & Med.) Any agent by which irritation is produced; as, a chemical irritant; a mechanical or electrical irritant.

  3. (Toxicology) A poison that produces inflammation.

    Counter irritant. See under Counter.

    Pure irritant (Toxicology), a poison that produces inflammation without any corrosive action upon the tissues.