Main Entry: afi·brin·o·gen·emia Variant: or chiefly Britishafi·brin·o·gen·ae·mia/"A-(")fI-"brin-&-j&-'nE-mE-&/ Function: noun : an abnormality of blood clotting caused by usually congenital absence of fibrinogen in the blood and markedby a tendency to prolonged bleeding