Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

acetoacetyl

noun ace·to·ace·tyl \ ¦a-sə-(ˌ)tō-ə-ˈsē-tᵊl , ə-ˌsē-tō- , -ˈa-sə-tᵊl \

Definition of acetoacetyl

plural -s
: the radical CH3COCH2CO− of acetoacetic acid

There's more!

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!
Already a subscriber? Log in.

Origin and Etymology of acetoacetyl

acet- + acetyl

Seen and Heard

What made you want to look up acetoacetyl? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

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

WORD OF THE DAY

imperturbable

play

very hard to disturb or upset

Get Word of the Day daily email!

TRENDING NOW

  1. hogwash 'nonsense, balderdash'

  2. probity 'adherence to the highest principles and ideals'

  3. sequacious 'intellectually servile'

  4. inadmissible 'not capable of being allowed'

  5. oligarch, pejorative 'a member a government in which a small group exercises control especially for corrupt and selfish purposes'

SEE ALL

BROWSE DICTIONARY

acetoacetyl

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet-pasta-spelling-help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

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