Definition of coumarin in English:

coumarin

Syllabification: cou·ma·rin
Pronunciation: /ˈko͞omərən
 
/

noun

Chemistry
1A vanilla-scented compound found in many plants, formerly used for flavoring food.
  • A bicyclic lactone; chemical formula: C9H6O2
More example sentences
  • Plants make coumarin from an amino acid, phenylalanine.
  • The spectrum of coumarin in uncomplexed DNA is shown as the solid curve.
  • In this assay a series of sample mixtures with a fixed protein concentration and increasing coumarin concentrations are injected.
1.1Any derivative of this.
More example sentences
  • Because of the presence of coumarins in some clover species, including Trifolium pratense, tests of clotting factors in future trials may be prudent.
  • Herbal medications that may increase the risk of bleeding if used concurrently with ginkgo include the following: feverfew, garlic, ginseng, dong quai, red clover, and other natural coumarins.
  • And sweet clovers aren't the only greens using coumarins.

Origin

mid 19th century: from French coumarine, from coumarou, via Portuguese and Spanish from Tupi cumarú 'tonka bean'.

Definition of coumarin in:

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Word of the day anomalous
Pronunciation: əˈnɒm(ə)ləs
adjective
deviating from what is standard, normal, or expected