disinfectant 2022.12.06 disinfectantとは 意味・定義・例文 Noun 名詞 1. a chemical substance, usually liquid, that destroys or kills bacteria and causes disinfection 殺菌[消毒]作用を持つもの; 消毒薬, 殺菌剤 Lemons are a great disinfectant.