polychlorinated biphenyl
noun Date: 1962 any of several compounds that are produced by replacing hydrogen atoms in biphenyl with chlorine, have various industrial applications, and are toxic environmental pollutants which tend to accumulate in animal tissues — called also PCB

New Collegiate Dictionary. 2001.

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  • polychlorinated biphenyl — [päl΄i klôr′ə nāt əd bī΄fen′əl, päl΄i klôr′ə nāt ed bī΄fē′nəl] n. PCB …   English World dictionary

  • Polychlorinated biphenyl — PCBs redirects here. For printed circuit boards, see printed circuit board. Labelling transformers containing PCBs …   Wikipedia

  • polychlorinated biphenyl — poly·chlo·ri·nat·ed biphenyl .päl i klōr ə .nāt əd , klȯr n any of several compounds that are produced by replacing hydrogen atoms in biphenyl with chlorine, have various industrial applications, and are toxic environmental pollutants which tend …   Medical dictionary

  • polychlorinated biphenyl — /pol ee klawr euh nay tid, klohr /, Chem. See PCB. [1960 65; POLY + CHLORINATED] * * * ▪ chemical compound       any of a class of organohalogen compounds prepared by the reaction of chlorine with biphenyl. A typical mixture of PCBs may contain… …   Universalium

  • polychlorinated biphenyl — noun A class of aromatic organic compounds formed by the chlorination of the hydrocarbon biphenyl; they have many industrial applications but are damaging to the environment …   Wiktionary

  • polychlorinated biphenyl — ¦pälē, lə̇ˌ… noun Etymology: poly + chlorinated, past participle of chlorinate : any of several compounds that are produced by replacing hydrogen atoms in biphenyl with chlorine, have various industrial applications, and are toxic environmental… …   Useful english dictionary

  • polychlorinated biphenyl — noun Chemistry any of a class of toxic chlorinated aromatic compounds, formed as waste in some industrial processes …   English new terms dictionary

  • polychlorinated biphenyl — /pɒliˌklɒrəneɪtəd baɪˈfɛnəl/ (say polee.kloruhnaytuhd buy fenuhl) noun → PCB1 …   Australian English dictionary

  • polychlorinated biphenyl — (PCB) Dielectric fluid used in capacitors and transformers that is very toxic. Use of PCB in transformers and capacitors is strictly regulated by the Environmental Protection Agency …   Dictionary of automotive terms

  • Polychlorinated dibenzodioxins — See also: 2,3,7,8 Tetrachlorodibenzodioxin, Dioxins and dioxin like compounds, and 1,4 Dioxin General structure of PCDDs where n and m can range from 0 to 4 Polychlorinated dibenzodioxins (PCDDs), or simply dioxins, are a group of organic… …   Wikipedia

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