Lexic.us

Definition of Coumarin

1. n. The concrete essence of the tonka bean, the fruit of Dipterix (formerly Coumarouna) odorata and consisting essentially of coumarin proper, which is a white crystalline substance, C₉H₆O₂, of vanilla-like odor, regarded as an anhydride of coumaric acid, and used in flavoring. Coumarin in also made artificially.

Definition of Coumarin

1. Noun. (organic compound) the bicyclic aromatic compound 1,2-benzopyrone or any of its derivatives ¹

¹ Source: wiktionary.com

Definition of Coumarin

1. a chemical compound [n -S] : COUMARIC [adj]

Medical Definition of Coumarin

1. O hydroxycinnamic acid. Pleasant smelling compound found in many plants and released on wilting (probably a major component of the smell of fresh hay). Has anticoagulant activity by competing with Vitamin K. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Coumarin

Literary usage of Coumarin

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Chemical News and Journal of Industrial Science (1908)
"... forming compounds of the type R,HgCl2, where R is a coumarin or a ... takes place with the following coumarins and their sulphur analogues :—coumarin, ..."

2. A Dictionary of Applied Chemistry by Thomas Edward Thorpe (1921)
"coumarin is also formed in small quantity by heating a mixture of phenol and malic acid with sulphuric acid CH,COOH CH-OH+ I (JH(OH)-COOH /CH : CH =С,Н4/ I ..."

3. The Practitioner by Gale Group, ProQuest Information and Learning Company (1884)
"Artificial coumarin.—coumarin is the odoriferous principle of the tonka bean, woodruff, sweet-smelling grass, and other plants, which owe their aroma and ..."

4. Elements of Chemistry: For the Use of Colleges, Academies, and Schools by Victor Regnault (1853)
"If the action of the nitric acid be prolonged, the coumarin is converted into ... The name of coumarin has been given to a crystalline odoriferous substance ..."

5. Elements of Chemistry: Theoretical and Practical by William Allen Miller (1862)
"coumarin is most easily extracted from uka bean by digesting the powdered seeds in alcohol ; on iting the alcoholic solution, crystals of coumarin are ob- ..."

6. Wöhler's Outlines of Organic Chemistry by Friedrich Wöhler, Ira Remsen, Rudolph Fittig (1873)
"After distilling off the greater part of the alcohol, the residue is mixed with boiling water and filtered, when the greater part of the coumarin separates. ..."

7. A Text-book of Organic Chemistry by Arnold Frederik. Holleman (1920)
"of water produces coumarin, which is converted into salts of ... coumarin can be obtained from salicylaldehyde by SIR WILLIAM PERKIN'S synthesis (328): ..."

8. Food Inspection and Analysis: For the Use of Public Analysts, Health by Albert Ernest Leach, Andrew Lincoln Winton (1913)
"The residue, believed to be coumarin, obtained as described in the preceding section, ... In presence of coumarin a brown precipitate will form, which, ..."

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