Share this entry
hydroxyl Line breaks: hy|droxyl
Pronunciation: /hʌɪˈdrɒksʌɪl/

Definition of hydroxyl in English:


[as modifier] Chemistry
Of or denoting the radical —OH, present in alcohols and many other organic compounds: a hydroxyl group
More example sentences
  • Phenols are a subgroup of alcohol in which the hydroxyl groups are attached directly to the carbon atoms of a ring structure.
  • The carbonyl group can be broken down by the action of hydrogen cyanide; a hydroxyl group and a nitrile group are formed in this reaction.
  • In the atmosphere the hydroxyl radicals oxidise nitrates to form ozone.


Mid 19th century: from a blend of hydrogen and oxygen, + -yl.

Definition of hydroxyl 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.

Subscribe to remove adverts and access premium resources