Disinfectant
来自Big Physics
wiktionary
Borrowed from French désinfectant.
etymonline
disinfectant (n.)
"agent used for destroying the germs of infectious diseases," 1837, from French désinfectant (1816), noun use of present participle of désinfecter (see disinfect), or else from the adjective in English (by 1827), "serving to disinfect." Related: Disinfection.