diol

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di·ol

 (dī′ôl, -ŏl)
n.
An alcohol, such as ethylene glycol or catechol, containing two hydroxy groups per molecule.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

diol

(ˈdaɪɒl)
n
(Chemistry) chem any of a class of alcohols that have two hydroxyl groups in each molecule. Also called: glycol or dihydric alcohol
[from di-1 + (alcoh)ol]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diol - any of a class of alcohols having 2 hydroxyl groups in each molecule
alcohol - any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation
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