Definition of prothrombin in English:


Line breaks: pro|throm¦bin
Pronunciation: /prəʊˈθrɒmbɪn


[mass noun] Biochemistry
  • A protein present in blood plasma which is converted into active thrombin during coagulation.
    More example sentences
    • Contact with tissue factor triggers the coagulation cascade, resulting in the conversion of prothrombin to active thrombin.
    • This complex activates prothrombin to thrombin in the presence of calcium ions.
    • Years ago we said fibrinogen (a soluble protein) becomes a clot of insoluble fibrin by the action of thrombin made from soluble prothrombin in the presence of calcium.

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Pronunciation: skəʊʃ
a small amount; a little