| a combining form with the meanings “blood clot,” “coagulation,” “thrombin,” used in the formation of compound words: thrombocyte. |

| thrombo- or thromb- pref. Blood clot; blood clotting: thromboplastic. [Greek, from thrombos, clot.] |
thrombo- or thromb-
pref.
Blood clot; blood clotting: thromboplastin.