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

• Hexanchidae
• Hexanchus
• Hexanchus griseus
• hexane
• hexanedioic acid
• hexangular
• hexanoic acid
• hexapod
• Hexapoda
• hexastyle
• Hexateuch
• hexed
• hexenbesen
• hexestrol
• hexose
• hexyl
• hey
• hey presto
• heyday
• Heyerdahl
• Heyrovsky
• Heyse
• Heyward
• Hezbollah
• Hezekiah