acetylacetone

noun

ace·​tyl·​ac·​e·​tone

ə-ˈsē-tᵊl-ˈa-sə-ˌtōn,

ˈa-sə-tᵊl-,

ˈa-sə-ˌtēl-

plural -s

: a colorless liquid diketone of pleasant odor known in two forms [keto form CH₃COCH₂COCH₃ and enol form CH₃COCHC(OH)CH₃] made in various ways (as by the reaction of sodium with acetone and ethyl acetate); 2,4-pentanedione

Word History

Etymology

International Scientific Vocabulary acetyl + acetone

First Known Use

1887, in the meaning defined above

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