coumarin

noun cou·ma·rin \ ˈkü-mə-rən \
|Updated on: 23 Jun 2018

Definition of coumarin

: a toxic white crystalline lactone C9H6O2 with an odor of new-mown hay found in plants or made synthetically and used especially in perfumery and as a parent compound in anticoagulant agents; also : a derivative of this compound

Recent Examples of coumarin from the Web

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

Origin and Etymology of coumarin

French coumarine, from coumarou tonka bean tree, from Spanish or Portuguese; Spanish cumarú, from Portuguese, from Tupi *kumarú, *kumbarú


Medical Dictionary

coumarin

noun cou·ma·rin \ ˈkü-mə-rən \

medical Definition of coumarin

: a toxic white crystalline lactone C9H6O2 with an odor of new-mown hay found in plants or made synthetically and used especially in perfumery and as the parent compound in various anticoagulant agents (as warfarin); also : a derivative of this compound

Learn More about coumarin


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

subject to rapid or unexpected change

Get Word of the Day daily email!

Test Your Vocabulary

The Eponym Quiz

  • rubens-painting
  • Which is the best synonym of bowdlerize?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ

Love words? Need even more definitions?

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