ir·ri·tant /ˈɪrətənt/
 (a.)刺激的,刺激性的刺激物,刺激劑


 ir·ri·tant /ˈɪrətənt/ 形容詞
 刺激(性)的,刺激劑,刺激物,刺激的,引起發炎的


 Ir·ri·tant a.  Scots Law 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.


 Ir·ri·tant, a.  Irritating; producing irritation or inflammation.


 Ir·ri·tant, n.
 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.

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 irritant
      n : something that causes irritation and annoyance; "he's a
          thorn in my flesh" [syn: thorn]