diphenyl

American  

[dahy-fen-l, -feen-l] / daɪˈfɛn l, -ˈfin l /

noun

Chemistry.

1. biphenyl.

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diphenyl British  

/ daɪˈfiːnaɪl, -ˈfɛnɪl, -nɪl /

noun

1. another name for biphenyl

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Etymology

Origin of diphenyl

First recorded in 1860–65

Example Sentences

In the mid-2000s, one class of chemicals, polybrominated diphenyl ether flame retardants, were gradually phased out of use due to concerns about their potential toxicity.

From Science Daily • Jan. 24, 2024

The research found the levels of banned PBDEs, or polybrominated diphenyl ethers, in breast milk have declined some 70% over the past two decades.

From Seattle Times • Jul. 21, 2023

Flame retardant chemicals, short-chain chlorinated paraffins and polybrominated diphenyl ethers disrupt endocrine function and negatively affect reproductive health.

From The Guardian • Nov. 15, 2019

It certainly does not help that so many of the chemicals they produce have such terrifyingly long and alien names… polybrominated diphenyl ether and hexabromocyclododecane, for example.

From BBC • Sep. 26, 2014

Berthelot first accomplished the synthesis of benzene in 1870 by leading acetylene, HC�CH, through tubes heated to dull redness; at higher temperatures the action becomes reversible, the benzene yielding diphenyl, diphenylbenzene, and acetylene.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" by Various