单词	perchloroethylene
释义	perchloroethylene noun per·​chlo·​ro·​eth·​y·​lene (ˌ)pər-ˌklȯr-ō-ˈe-thə-ˌlēn  : a colorless nonflammable toxic liquid C2Cl4 used often as a solvent in dry cleaning and for removal of grease from metals Example Sentences Recent Examples on the Web In December, a state ban on the toxic cleaning agent perchloroethylene went into effect. Los Angeles Times, 31 July 2021 The operation was shut down in May 2002, and hazardous substances were found at the site, including perchloroethylene, trichloroethylene, 1,2-dichloroethylene and vinyl chloride, chemicals which can cause cancer in humans. Paul Wedding, Houston Chronicle, 25 Nov. 2019 His task had been to create a new product out of hydrocarbon and chlorine, two by-products of manufacturing the dry-cleaning agent perchloroethylene. Sarah Gibbens, National Geographic, 12 July 2019 Eco-Dry-Clean About 85 percent of dry cleaners use a chemical called perchloroethylene (perc for short) that’s linked to respiratory issues, birth defects, and air pollution. Lindsay Talbot, Marie Claire, 19 July 2018 Word History First Known Use 1873, in the meaning defined above Medical Definition perchloroethylene noun per·​chlo·​ro·​eth·​y·​lene ˌpər-ˌklōr-ō-ˈeth-ə-ˌlēn  variants also perchlorethylene -ˌklōr-ˈeth-  : a toxic nonflammable carcinogenic liquid C2Cl4 often used as a solvent in dry cleaning and for removal of grease from metals called also perc, tetrachloroethylene
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