基本释义
adj. 刺激的；刺激性的
n. [医] 刺激物，[医] 刺激剂
星级词汇
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助记提示
1. rise => ris- => rit- “rise, stir up, set in motion, excite”.
2. ir- (in- “into, in, on, upon”) + rit- “rise, stir up, set in motion, excite” + -ant.
3. => stimulate to action, provoke, incite. (其构词原理与 incite 差不多，incite => 字面含义：make motion(激发、刺激而使其活动)。)
4. => annoy, make impatient.
5. 该的第二层含义：ir- “not” + rit- (from ratus “fixed by calculation; determined; approved; certain, sure; valid” (past participle adjective from reri “reckon, think;” see rate, reason)) + -ant.
英文词源
irritant 刺激物
来自irritate,刺激，使烦恼。
