“Acetoacetic”

The following 2 entries include the term Acetoacetic.

acetoacetic acid

noun

: an unstable acid C4H6O3 that is a ketone body found in abnormal quantities in the blood and urine in some conditions (such as diabetes)

See the full definition

acetoacetic ester

noun

: ethyl acetoacetate

See the full definition

Word of the Day

Listen to the pronunciation of diaphanous

See Definitions and Examples »

Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Spell It

Hear a word and type it out. How many can you get right?

TAKE THE QUIZ
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.

Pick the best words!

PLAY
Love words? Need even more definitions?

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

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
girl-pencil-test
Challenging Standardized Test Words Quiz Vol. 3 You’re on your own for the math section.
See All