联苯 liánběn biphenyl Origin Definitions Defs Strokes Stroke Words Sentences Sents 联苯胺 liánběn'àn benzidine (chemistry) benzidine多氯联苯 duōlǜliánběn polychlorinated biphenyl A group of highly stable organic compounds used as industrial insulators and lubricants but known to be toxic environmental pollutants and carcinogens.