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biphenyl

[ bahy-fen-l, -feen-l ]
/ baɪˈfɛn l, -ˈfin l /
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noun Chemistry.
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.
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Also called diphenyl, phenylbenzene.

Origin of biphenyl

First recorded in 1920–25; bi-1 + phenyl
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for biphenyl

biphenyl
/ (baɪˈfɛnəl, -ˈfiː-) /

noun
a white or colourless crystalline solid used as a heat-transfer agent, as a fungicide, as an antifungal food preservative (E230) on the skins of citrus fruit, and in the manufacture of dyes, etc. Formula: C 6 H 5 C 6 H 5
any substituted derivative of biphenyl
Also called: diphenyl
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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