[ dahy-nahy-truh-fee-nawl, -nol ]
/ daɪˌnaɪ trəˈfi nɔl, -nɒl /

noun Chemistry, Pharmacology.

any of the six isomers consisting of phenol where two hydrogen atoms are substituted by nitro groups, C6H4N2O5, used in dyes and wood preservatives, and in biochemistry to uncouple oxidative phosphorylation.

Origin of dinitrophenol

First recorded in 1895–1900; di-1 + nitrophenol
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for dinitrophenol


[ dī-nī′trō-fēnôl′, -nōl′ ]


Any of six crystalline compounds, especially a highly toxic compound that increases fat metabolism and was formerly used in weight control.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.