hy·​droxy | \ hī-ˈdräk-sē \

Definition of hydroxy

: being or containing hydroxyl especially : containing hydroxyl especially in place of hydrogen usually used in combination hydroxyacetic acid

Examples of hydroxy in a Sentence

Recent Examples on the Web

Beta hydroxy acids break down the bridges/bonds between the cells, while alpha hydroxy acids cause the cells themselves to detach/release. Alexandra Tunell, Harper's BAZAAR, "#BeautySchool: What Your Skin Is Doing While You Sleep," 14 Dec. 2015 Aging If signs of skin aging are a concern, choose hydroxy acid cleansers. Dr. Leslie Baumann, miamiherald, "How to choose a skin cleanser," 18 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydroxy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hydroxy

1812, in the meaning defined above

History and Etymology for hydroxy

International Scientific Vocabulary, from hydroxyl

Keep scrolling for more

Learn More about hydroxy

Statistics for hydroxy

Last Updated

24 Dec 2018

Look-up Popularity

Time Traveler for hydroxy

The first known use of hydroxy was in 1812

See more words from the same year

Keep scrolling for more

More Definitions for hydroxy


hy·​droxy | \ hī-ˈdräk-sē \

Medical Definition of hydroxy

: being or containing hydroxyl especially : containing hydroxyl in place of hydrogen often used in combination hydroxybutyric acid

Comments on hydroxy

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


marked by fawning attentiveness

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Add Diction

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!