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

• Portuguese Republic
• portulaca
• Portulaca grandiflora
• Portulaca oleracea
• Portulacaceae
• Portunidae
• Portunus
• Portunus puber
• portwatcher
• Porzana
• Porzana porzana
• POS
• pos tagger
• posada
• pose
• posed
• Poseidon
• poser
• poseur
• poseuse
• posey
• posh
• posing
• posit
• position