SINCE 1828
dictionary
thesaurus
view recents

acetylacetone

noun
Save Word
ace·​tyl·​ac·​e·​tone | \ ə-ˈsē-tᵊl-ˈa-sə-ˌtōn, ˈa-sə-tᵊl-, ˈa-sə-ˌtēl- \
plural -s

Definition of acetylacetone

: 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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of acetylacetone

1887, in the meaning defined above

History and Etymology for acetylacetone

International Scientific Vocabulary acetyl + acetone

Learn More About acetylacetone

Time Traveler for acetylacetone

Time Traveler

The first known use of acetylacetone was in 1887

See more words from the same year

Dictionary Entries Near acetylacetone

acetylacetonate

acetylacetone

acetylamino-

See More Nearby Entries 

Statistics for acetylacetone

Cite this Entry

“Acetylacetone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acetylacetone. Accessed 29 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

career

Listen to the pronunciation of career

See Definitions and Examples »

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games