lac·​tone | \ ˈlak-ˌtōn How to pronounce lactone (audio) \

Definition of lactone

: any of various cyclic esters formed from hydroxy acids

Other Words from lactone

lactonic \ lak-​ˈtä-​nik How to pronounce lactone (audio) \ adjective

Examples of lactone in a Sentence

Recent Examples on the Web Another clean fragrance brand, St. Rose, imbues its creations with a macrocyclic synthetic musk called juniper lactone to lend scents like St. Rose’s Desert Nomad an earthy bounce. ELLE, 30 Apr. 2022 Ivermectin was developed by Merck in the 1970s, decades before molnupiravir, and is classified as a macrocyclic lactone. Miriam Fauzia, USA TODAY, 12 Oct. 2021 The company was able to biosynthesize the musk fragrance compounds by leveraging its lactone production technology with its lipid platform. John Cumbers, Forbes, 12 May 2021 Those similar substances include flavonoids, a group of plant metabolites that have antioxidant effects, and sesquiterpene lactones, a class of chemical compounds that are known to have anti-inflammatory properties, Merville said. Scott Cacciola, New York Times, 4 May 2016

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

First Known Use of lactone

1880, in the meaning defined above

History and Etymology for lactone

International Scientific Vocabulary

Learn More About lactone

Time Traveler for lactone

Time Traveler

The first known use of lactone was in 1880

See more words from the same year

Dictionary Entries Near lactone




See More Nearby Entries 

Statistics for lactone

Cite this Entry

“Lactone.” Dictionary, Merriam-Webster, Accessed 11 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for lactone


lac·​tone | \ ˈlak-ˌtōn How to pronounce lactone (audio) \

Medical Definition of lactone

: any of various cyclic esters formed from hydroxy acids — compare lactam, sultone

Other Words from lactone

lactonic \ lak-​ˈtän-​ik How to pronounce lactone (audio) \ adjective

More from Merriam-Webster on lactone Encyclopedia article about lactone


Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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