[trahy-awl, -ol]

noun Chemistry.

a compound having three hydroxyl groups.

Origin of triol

First recorded in 1935–40; tri- + -ol1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for triol



any of a class of alcohols that have three hydroxyl groups per moleculeAlso called: trihydric alcohol

Word Origin for triol

from tri- + -ol 1
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

triol in Science


[trīôl′, -ōl′]

An alcohol containing three hydroxyl groups (OH) per molecule.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.