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thromboplastin Line breaks: thrombo|plas¦tin
Pronunciation: /ˌθrɒmbə(ʊ)ˈplastɪn/

Definition of thromboplastin in English:


[mass noun] Biochemistry
An enzyme released from damaged cells, especially platelets, which converts prothrombin to thrombin during the early stages of blood coagulation.
Example sentences
  • In the second stage, prothrombin is activated by thromboplastin to make thrombin.
  • Indicated tests include a complete blood cell count with platelet count, a peripheral blood smear, and prothrombin and activated partial thromboplastin times.
  • The atrial fibrillation group also had more hematologic tests done, including more prothrombin and partial thromboplastin times.
Definition of thromboplastin in:
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