Irritant /(?)/

Ir·ri·tant

Irritant

a.
  1. Rendering null and void; conditionally invalidating. (Scots Law)
    The states elected Harry, Duke of Anjou, for their king, with this clause irritant; that, if he did violate any part of his oath, the people should owe him no allegiance.
    — Hayward.

Irritant

a.
  1. Irritating; producing irritation or inflammation.

Irritant

n.
  1. That which irritates or excites.
  2. Any agent by which irritation is produced; as, a chemical irritant; a mechanical or electrical irritant. (Physiol. & Med.)
  3. A poison that produces inflammation. (Toxicology)

Phrases & Compounds
Counter irritant
See under Counter.
Pure irritant
a poison that produces inflammation without any corrosive action upon the tissues.