fibrinase fibrin • fibrinate · · · Info · Definitions · Synonyms · Characters · · fibrinase · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) in the clotting of blood thrombin catalyzes factor XIII into its active form (fibrinase) which causes fibrin to form a stable clot. Synonyms: factor XIII. · · Noun Definition 1 Synonyms · · · factor xiii · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073