acetol, n. [Acetic + -ol as in alcohol.].
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Methyl ketol; also, any of various homologues of the same. [Webster 1913 Suppl.]
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a trade name used at different times to represent different substances, as hydroxyacetone, acetylsalicylic acid, acetal, diethyl aldehyde, or cellulose acetate. [PJC]