| 单词 | pbb |
| 释义 | PBB in American English (ˌpiˌbiˈbi) noun any of several fat-soluble, cancer-causing substances formerly used as fire retardants Word origin p(oly)b(rominated) b(iphenyl)PBB in American Englishabbreviation Chemistry any of the highly toxic and possibly carcinogenic aromatic compounds consisting of two benzene rings in which bromine takes the place of two or more hydrogen atoms: used as a fire retardant and additive for plastics Also called: polybrominated biphenyl Word origin [p(oly)b(rominated) b(iphenyl)] |
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