or hy·drox·y

[ hahy-drok-suh l ]
/ haɪˈdrɒk səl /


containing the hydroxyl group.

Origin of hydroxyl

First recorded in 1865–70; hydr-2 + ox(y)-2 + -yl

Related forms

hy·drox·yl·ic [hahy-drok-sil-ik] /ˌhaɪ drɒkˈsɪl ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hydroxyl

British Dictionary definitions for hydroxyl


/ (haɪˈdrɒksɪl) /


(modifier) of, consisting of, or containing the monovalent group -OH or the ion OH a hydroxyl group or radical

Derived Forms

hydroxylic, adjective
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

Medicine definitions for hydroxyl


[ hī-drŏksĭl ]


The univalent radical or group OH, a characteristic component of bases, certain acids, phenols, alcohols, carboxylic and sulfonic acids, and amphoteric compounds.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for hydroxyl


[ hī-drŏksĭl ]

The group OH. Hydroxyl is present in bases, certain acids, hydroxides, and alcohols.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.