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8 Words That Are Older Than You Think

hydroxyl group

noun
1.
the univalent group –OH, as in inorganic compounds, such as sodium hydroxide, NaOH, or as in organic compounds, such as ethyl alcohol, C 2 H 6 O.
Also called hydroxyl radical.
Origin
1880-1885
1880-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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