[ nahy-truh-fee-nawl, -nol ]

  1. any compound derived from phenol by the replacement of one or more of its ring hydrogen atoms by the nitro group.

  2. any of three water-soluble, crystalline isomers of such a derivative, having the formula C6H5NO3, occurring in yellow (ortho-nitrophenol ), pale-yellow (meta-nitrophenol ), and yellowish (para-nitrophenol ) solids, used chiefly as intermediates in organic synthesis and as indicators.

Origin of nitrophenol

First recorded in 1850–55; nitro- + phenol

Words Nearby nitrophenol Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use nitrophenol in a sentence