Definition of coumarin in English:

coumarin

noun ˈkuːmərɪnˈkum(ə)rən

mass nounChemistry

1A vanilla-scented compound found in many plants, formerly used for flavouring food.
〔化〕香豆素；氧杂萘邻酮
A bicyclic lactone; chemical formula: C₉H₆O₂
Example sentencesExamples
- 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.
- The benefit of benzopyrones, such as coumarin or flavonoids, remains unproved.
- Plants make coumarin from an amino acid, phenylalanine.
- We modeled the modified complex by replacing the guanine in the native structure with coumarin and allowing rotation about the glycosidic bond.
1. 1.1count noun Any derivative of coumarin.
  香豆素的任何一种衍生物
  Example sentencesExamples
  They smell like sandalwood, jasmine and honeyed-clove, with touches of coumarin and vanilla.
  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.
  Because of the presence of coumarins in some clover species, including Trifolium pratense, tests of clotting factors in future trials may be prudent.
  The most widely used oral anticoagulants are coumarin derivatives.
  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 US English:

coumarin

nounˈkum(ə)rənˈko͞om(ə)rən

Chemistry

1A vanilla-scented compound found in many plants, formerly used for flavoring food.
〔化〕香豆素；氧杂萘邻酮
A bicyclic lactone; chemical formula: C₉H₆O₂
Example sentencesExamples
- We modeled the modified complex by replacing the guanine in the native structure with coumarin and allowing rotation about the glycosidic bond.
- The spectrum of coumarin in uncomplexed DNA is shown as the solid curve.
- The benefit of benzopyrones, such as coumarin or flavonoids, remains unproved.
- Plants make coumarin from an amino acid, phenylalanine.
- In this assay a series of sample mixtures with a fixed protein concentration and increasing coumarin concentrations are injected.
1. 1.1 Any derivative of coumarin.
  香豆素的任何一种衍生物
  Example sentencesExamples
  They smell like sandalwood, jasmine and honeyed-clove, with touches of coumarin and vanilla.
  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.
  Because of the presence of coumarins in some clover species, including Trifolium pratense, tests of clotting factors in future trials may be prudent.
  The most widely used oral anticoagulants are coumarin derivatives.

Origin

Mid 19th century: from French coumarine, from coumarou, via Portuguese and Spanish from Tupi cumarú ‘tonka bean’.

单词	coumarin
释义	Definition of coumarin in English: coumarin noun ˈkuːmərɪnˈkum(ə)rən mass nounChemistry 1A vanilla-scented compound found in many plants, formerly used for flavouring food. 〔化〕香豆素；氧杂萘邻酮 A bicyclic lactone; chemical formula: C₉H₆O₂ Example sentencesExamples 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. The benefit of benzopyrones, such as coumarin or flavonoids, remains unproved. Plants make coumarin from an amino acid, phenylalanine. We modeled the modified complex by replacing the guanine in the native structure with coumarin and allowing rotation about the glycosidic bond. 1.1count noun Any derivative of coumarin. 香豆素的任何一种衍生物 Example sentencesExamples They smell like sandalwood, jasmine and honeyed-clove, with touches of coumarin and vanilla. 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. Because of the presence of coumarins in some clover species, including Trifolium pratense, tests of clotting factors in future trials may be prudent. The most widely used oral anticoagulants are coumarin derivatives. 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 US English: coumarin nounˈkum(ə)rənˈko͞om(ə)rən Chemistry 1A vanilla-scented compound found in many plants, formerly used for flavoring food. 〔化〕香豆素；氧杂萘邻酮 A bicyclic lactone; chemical formula: C₉H₆O₂ Example sentencesExamples We modeled the modified complex by replacing the guanine in the native structure with coumarin and allowing rotation about the glycosidic bond. The spectrum of coumarin in uncomplexed DNA is shown as the solid curve. The benefit of benzopyrones, such as coumarin or flavonoids, remains unproved. Plants make coumarin from an amino acid, phenylalanine. In this assay a series of sample mixtures with a fixed protein concentration and increasing coumarin concentrations are injected. 1.1 Any derivative of coumarin. 香豆素的任何一种衍生物 Example sentencesExamples They smell like sandalwood, jasmine and honeyed-clove, with touches of coumarin and vanilla. 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. Because of the presence of coumarins in some clover species, including Trifolium pratense, tests of clotting factors in future trials may be prudent. The most widely used oral anticoagulants are coumarin derivatives. Origin Mid 19th century: from French coumarine, from coumarou, via Portuguese and Spanish from Tupi cumarú ‘tonka bean’.
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