pentanone

noun

pen·​ta·​none

ˈpentəˌnōn

plural -s

: 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

Word History

Etymology

pentane + -one

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