防除剤(ぼうじょざい) ぼうじょざい noun pest-control agent; pesticide tool 1. pest-control agent; pesticide A substance used to prevent or eliminate pests, insects, or plant diseases, especially in agriculture and gardening. 畑(はたけ)に防除剤(ぼうじょざい)をまく。🔊 to spread pest-control agent on the field. この防除剤(ぼうじょざい)は害虫(がいちゅう)によく効(き)く。🔊 This pesticide works well against harmful insects. 農薬(のうやく)の使(つか)いすぎを避(さ)けるため、防除剤(ぼうじょざい)の量(りょう)を減(へ)らした。🔊 To avoid overusing agrochemicals, I reduced the amount of pest-control agent. Composed of 防除(ぼうじょ) ('prevention and extermination') + 剤(ざい) ('agent, preparation'). Refers to substances used to control agricultural pests, insects, and plant diseases.Common collocations防除剤(ぼうじょざい)を散布(さんぷ)する: to spray a pest-control agentSimilar words殺虫剤(さっちゅうざい): insecticide — targets insects specifically農薬(のうやく): agricultural chemical — the broader category Related Words Compare: 殺虫剤(さっちゅうざい) (insecticide) Compare: 農薬(のうやく) (agricultural chemical) general Added 2026.7.19 9:19 · Revised 2026.9.2 13:02 29500/29950_boujozai