Share this entry

carboxyl Line breaks: carb|oxyl
Pronunciation: /kɑːˈbɒksʌɪl/
(also carboxy)

Definition of carboxyl in English:


[as modifier] Chemistry
Of or denoting the acid radical —COOH, present in most organic acids: the carboxyl group
More example sentences
  • The carboxyl group of lysergic acid has been reduced to a methyl group.
  • This is caused by a dehydration reaction between the hydroxyl group from the glycerol and the carboxyl groups of the fatty acids.
  • It is a weak organic acid that contains a carboxyl group.


Mid 19th century: from carbo- + ox- 'oxygen' + -yl.

Definition of carboxyl in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day confidant
Pronunciation: ˈkänfəˌdant
a person with whom one shares a secret...