| 单词 | piperonyl butoxide |
| 释义 | piperonyl butoxide /pi per"euh nl, puy-, pip"euhr euh nil/, Chem. a light-brown liquid, C19H30O5, used chiefly as a synergist in certain insecticides. [1940-45; PIPERON(AL) + -YL; but- (from BUTYRIC) + OXIDE] |
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