1. A low level of prothrombin (factor II) in the circulating blood; results in long clotting time and poor clot formation and sometimes excessive bleeding; can result from vitamin K deficiency

Type of: blood disease, blood disorder

• genus Conradina
• genus Consolida
• genus Contopus
• genus Conuropsis
• genus Convallaria
• genus Convolvulus
• genus Conyza
• genus Copernicia
• genus Coprinus
• genus Coptis
• genus Coracias
• genus Coragyps
• genus Corallorhiza
• genus Corchorus
• genus Cordaites
• genus Cordia
• genus Cordyline
• genus Cordylus
• genus Coregonus
• genus Coreopsis
• genus Coriandrum
• genus Corixa
• genus Cornus
• genus Corokia
• genus Coronilla