transcription, транскрипция: [ pī-ˈper-ə-ˌnil-byu̇-ˈtäk-ˌsīd, -n ə l- ]
noun
Etymology: piperon al + -yl + but yl + oxide
Date: 1945
: an insecticide C 19 H 30 O 5 ; especially : an oily liquid containing this compound that is used chiefly as a synergist (as for pyrethrin insecticides)