The Collaborative International Dictionary
Diphenyl
Diphenyl \Di*phe"nyl\, n. [Pref. di- + phenyl.] (Chem.) A white crystalline substance, C6H5.C6H5, obtained by leading benzene through a heated iron tube. It consists of two benzene or phenyl radicals united.
Wiktionary
diphenyl
n. (context organic compound English) An alternative name of biphenyl.