irritant

1. a. Rendering null and void; conditionally invalidating. Source: opted

2. a. Irritating; producing irritation or inflammation. Source: opted

3. n. That which irritates or excites. Source: opted

4. n. Any agent by which irritation is produced; as, a chemical irritant; a mechanical or electrical irritant. Source: opted

5. n. A poison that produces inflammation. Source: opted

6. n. something that causes irritation and annoyance Source: wordnet

7. Rendering null and void; conditionally invalidating. 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. Irritating; producing irritation or inflammation. 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. Source: webster

8. Rendering null and void; conditionally invalidating.The states elected Harry, Duke of Anjou, for their king, with thisclause irritant; that, if he did violate any part of his oath, thepeople should owe him no allegiance. Hayward. Source: adambom

9. n:100 n. something that causes irritation and annoyance Source: ecdict

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