| 单词 | benzopyrene |
| 释义 | benzopyrene in American English (ˌbɛnzoʊˈpaɪˌrin) noun an aromatic hydrocarbon, C20H12, found in coal tar, cigarette smoke, etc. and known to be a cause of cancer in animals : sometimes called ˌbenzˈpyrene (ˌbɛnzˈpaɪrin)Word origin benzo- + pyrene2benzopyrene in American English (ˌbenzouˈpairin, -paiˈrin) noun Chemistry a yellow, crystalline aromatic carcinogenic hydrocarbon, C20H12, consisting of five fused benzene rings, produced by incomplete combustion of organic material, as coal, petroleum, or tobacco Also: benzpyrene Word origin [1925–30; benzo- or benz- + pyrene]This word is first recorded in the period 1925–30. Other words that entered Englishat around the same time include: buildup, gimmick, recycle, runout, turnaroundbenzo- is a combining form used in the names of chemical compounds in which benzene, benzoicacid, or one or more of the phenyl groups is present. Other words that use the affixbenzo- include: benzocaine, benzoglyoxaline, benzophenone, benzosulfimide, benzotrichlorideExamples of 'benzopyrene' in a sentence |
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