op·er·ant /ˈɑpərənt/
(a.)動作的;生效的;可推斷的
op·er·ant /ˈɑpərənt/ 形容詞
Op·er·ant a. Operative. [R.] --Shak. -- n. An operative person or thing. [R.]
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operant
adj : having influence or producing an effect; "many emotional
determinants at work"; "an operant conscience" [syn: at
work(p)]