acetic anhydride


Definition of acetic anhydride 

: a colorless liquid C4H6O3 with a pungent odor used in organic synthesis (as of cellulose acetate and aspirin)

First Known Use of acetic anhydride

1855, in the meaning defined above

Keep scrolling for more

Learn More about acetic anhydride

Share acetic anhydride

Statistics for acetic anhydride

Look-up Popularity

Time Traveler for acetic anhydride

The first known use of acetic anhydride was in 1855

See more words from the same year

Keep scrolling for more

More Definitions for acetic anhydride

acetic anhydride


Medical Definition of acetic anhydride 

: a colorless liquid (CH3CO)2O with a pungent odor and lacrimatory and vesicant action that is used especially in making acetyl derivatives (as aspirin)

More from Merriam-Webster on acetic anhydride Encyclopedia article about acetic anhydride

Comments on acetic anhydride

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


a generally accepted meaning of a word

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Dictionary Devil

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


Love words? Need even more definitions?

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