[bahy-fen-l, -feen-l] 
| a water-insoluble, pleasant-smelling, colorless powder or white scales, C12H10, composed of two phenyl groups, from which benzidine dyes are derived: used chiefly as a heat-transfer agent and in organic synthesis. |
| bi·phen·yl (bī-fěn'əl, -fē'nəl) n. A colorless crystalline compound, C12H10, used as a heat-transfer agent, in fungicides, and in organic synthesis. Also called diphenyl. |
biphenyl bi·phen·yl (bī-fěn'əl, -fē'nəl)
n.
A colorless crystalline aromatic hydrocarbon used in fungicides and in organic synthesis. Also called diphenyl.
biphenyl
an aromatic hydrocarbon, used alone or with diphenyl ether as a heat-transfer fluid; chemical formula, C6H5C6H5. It may be isolated from coal tar; in the United States, it is manufactured on a large scale by the thermal dehydrogenation of benzene.
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