phenyl ether

noun

1

: a low-melting crystalline compound (C₆H₅)₂O of geranium odor used chiefly in perfumes (as for soaps) and in a mixture with biphenyl as a heat-transfer medium

called also diphenyl ether, diphenyl oxide

2

: an ether in which one of the radicals united to oxygen is phenyl

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!