单词	allethrin
释义	allethrin noun al·​le·​thrin ˈa-lə-thrən  : a light yellow viscous oily synthetic pyrethroid insecticide C19H26O3 used especially in household aerosols Word History Etymology allyl + pyrethrin First Known Use 1950, in the meaning defined above Medical Definition allethrin noun al·​le·​thrin ˈal-ə-thrən  : a light yellow viscous oily synthetic insecticide C19H26O3 used especially in household aerosols
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