pi·​nac·​o·​lone | \ -ˌlōn\
plural -s

Definition of pinacolone

1 : a liquid ketone (CH3)3COCH3 of peppermint odor formed from pinacol by treatment with acid to cause loss of water and molecular rearrangement; 3,3-dimethyl-2-butanone
2 : any of a series of ketones R3CCOR formed like pinacolone from other pinacols

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History and Etymology for pinacolone

pinacol + -one

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