1) Colorless ketone 2) Type of motor fuel 
• (n.) Methyl ketol; also, any of various homologues of the same.
An obsolete term for 1-hydroxy-2-propanone, or hydroxyacetone, CH2OH-CO-CH3; also used as a proprietary name for certain commercial items. ... (05 Mar 2000) ... 
Ac'e·tol noun [ Acet ic + - ol as in alcohol .] (Chemistry) Methyl ketol; also, any of various homologues of the same. 
Type: Term Pronunciation: as′e-tol Definitions: 1. Common term for 1-hydroxy-2-propanone or hydroxyacetone.