Definition of heparin in English:


Syllabification: hep·a·rin
Pronunciation: /ˈhepərin


  • A compound occurring in the liver and other tissues that inhibits blood coagulation. A sulfur-containing polysaccharide, it is used as an anticoagulant in the treatment of thrombosis.
    More example sentences
    • Blood was collected from untreated albino mice using heparin as the anticoagulant.
    • The common treatment for thrombotic episodes is an oral anticoagulant and/or heparin.
    • The drug is based on the natural anticoagulant heparin.


early 20th century: via late Latin from Greek hēpar 'liver' + -in1.

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