polychlorinated biphenyl
UK /ˌpɒlɪˌklɔːrɪneɪtɪd ˈbaɪfənɪl/US /ˌpoʊliˌklɔrəˌneɪtəd ˈbaɪfənɪl/
noun1
- Any of a class of aromatic organic compounds formed by the chlorination of the hydrocarbon biphenyl; they have many industrial applications but are now considered persistent organic pollutants.
forms
polychlorinated biphenyls