‘Polychlorinated biphenyls’ means aromatic compounds formed in such a manner that the hydrogen atoms on the biphenyl molecule (two benzene rings bonded together by a single carbon-carbon bond) may be replaced by up to ten chlorine atoms
Ciallaíonn “défheinilí polaclóirínithe” comhdhúile aramataca atá foirmithe ar dhóigh go bhféadfar suas le deich gcinn de hadaimh clóirín a chur in ionad na n-adamh hidrigine ar an móilín défheinil (dhá fháine beinséin atá nasctha le chéile le nasc amháin carbón-carbón)