noun pen·ta·none \ˈpentəˌnōn\

Definition of pentanone



  1. :  either of two isomeric flammable liquid ketones derived from normal pentane: a :  the unsymmetrical compound CH3CH2CH2COCH3 —called also methyl propyl ketone, 2-pentanone b :  the symmetrical compound (C2H5)2CO obtainable from propionic acid —called also diethyl ketone, 3-pentanone, propione

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Origin and Etymology of pentanone

pentane + -one

Seen and Heard

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a brief usually trivial fact

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