prothrombin

[ proh-throm-bin ]
/ proʊˈθrɒm bɪn /

noun Biochemistry.

a plasma protein involved in blood coagulation that on activation by factors in the plasma is converted to thrombin.
Also called thrombogen.

Origin of prothrombin

First recorded in 1895–1900; pro-1 + thrombin

Words nearby prothrombin

prothonotary, prothonotary apostolic, prothonotary warbler, prothoracic gland, prothorax, prothrombin, prothrombin accelerator, prothrombin test, prothrombinase, protist, protista

British Dictionary definitions for prothrombin

prothrombin
/ (prəʊˈθrɒmbɪn) /

noun

biochem a zymogen found in blood that gives rise to thrombin on activation See also phylloquinone

Medical definitions for prothrombin

prothrombin
[ prō-thrŏm′bĭn ]

n.

A glycoprotein formed by and stored in the liver and present in the blood plasma that is converted to thrombin in the presence of thromboplastin and calcium ion during blood clotting. factor II

Scientific definitions for prothrombin

prothrombin
[ prō-thrŏm′bĭn ]

A glycoprotein that is converted to thrombin during blood clotting. Prothrombin is formed by and stored in the liver.