Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: a cyclic acetal formed especially by reaction of acetone with both hydroxyl groups of a diol — see fluocinolone acetonide
Resources for acetonide
Comments on acetonide
What made you want to look up acetonide? Please tell us where you read or heard it (including the quote, if possible).
exaggeratedly or childishly emotional
Get Word of the Day daily email!
Words from Greek and Roman Mythology Quiz
Test your visual vocabulary with our 10-question challenge!
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Words can be hard to pin down
Just add an 'E.'
And if so, what about 'never'?
Words from the week of 10/19/2018
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
A mythological/etymological mashup!
Words to improve your Scrabble game
SCRABBLE® fans, sharpen your skills!