factor XIII n.
A factor in the clotting of blood that is converted by thrombin into its active form, which cross-links subunits of the fibrin clot to form insoluble fibrin. Also called Laki-Lorand factor.
|in the clotting of blood thrombin catalyzes factor XIII into its active form (fibrinase) which causes fibrin to form a stable clot [syn: fibrinase]|
|a fool or simpleton; ninny.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|