柯林斯詞典insecticide /?n?s?kt??sa?d/ (insecticides) 1. N-MASS Insecticide is a chemical substance that is used to kill insects. 殺蟲劑 Spray the plants with insecticide. 給植物噴灑殺蟲劑。 返回 insecticide劍橋詞典a chemical substance made and used for killing insects , especially those that eat plants 殺蟲劑 比較herbicide pesticide 返回 insecticide