单词	piperonyl butoxide
释义	piperonyl butoxide noun pi·​per·​o·​nyl bu·​tox·​ide pī-ˈper-ə-ˌnil-byu̇-ˈtäk-ˌsīd  -nᵊl- : an insecticide C19H30O5 especially : an oily liquid containing this compound that is used chiefly as a synergist (as for pyrethrin insecticides) Example Sentences Recent Examples on the Web The Centers for Disease Control and Prevention recommends over-the-counter medications such as pyrethrins combined with piperonyl butoxide or permethrin lotion. Mckenzie Sadeghi, USA TODAY, 11 Feb. 2016 For pubic lice, lice-killing lotions that contain active ingredients called permethrin, pyrethrins, or piperonyl butoxide, can be applied to the area. Sarah Bradley, Health.com, 24 Oct. 2019 Word History Etymology piperonal + -yl + butyl + oxide First Known Use 1945, in the meaning defined above Medical Definition piperonyl butoxide noun pi·​per·​o·​nyl bu·​tox·​ide pī-ˈper-ə-ˌnil-byu̇-ˈtäk-ˌsīd, -ən-ᵊl-  : an insecticide C19H30O5 that has the capacity to alter the pharmacological action of some drugs also : an oily liquid containing this compound that is used chiefly as a synergist (as for pyrethrum insecticides)
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