diol

[dahy-awl, -ol]

di·ol

[dahy-awl, -ol]
noun Chemistry.
glycol (def. 2).

Origin:
1920–25; di-1 + -ol
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Diol is always a great word to know.
So is silicone. Does it mean:
the molecular weight of a substance expressed in grams; a gram molecule
any of a number of polymers containing alternate silicon and oxygen atoms and that are fluid, resinous, rubbery, extremely stable in high temperatures, and water-repellent
Collins
World English Dictionary
diol (ˈdaɪɒl)
 
n
chem glycol, Also called: dihydric alcohol any of a class of alcohols that have two hydroxyl groups in each molecule
 
[from di-1 + (alcoh)ol]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
diol   (dī'ôl, -ŏl)  Pronunciation Key 
An alcohol containing two hydroxyl groups per molecule.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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