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.

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]
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