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

• singletree
• Singlish
• singly
• singsong
• swaddle
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• swag
• swage
• swage block
• swagger
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• Swainsona
• Swainsona galegifolia
• Swainsona grandiflora
• Swainsona greyana
• swale
• swallow
• swallow dive