| 释义 | op·er·ant I. \ˈäpərənt\ adjective
 Etymology: Latin operant-, operans, present participle of operari
 1.  : functioning or tending to produce effects : effective
 < an operant conscience >
 2.  : of, relating to, or being a behavioral operant
 < operant conditioning >
 II. noun
 (-s)
 1.  : one that operates : operative, operator
 2.  : behavior or responses that operate on the environment to produce rewarding and reinforcing effects
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