Medical Dictionary

factor IX

play
noun \-ˈnīn\

Medical Definition of factor IX

  1. :  a clotting factor that activates factor VIII and whose absence is associated with hemophilia B—called also autoprothrombin II, Christmas factor


Seen and Heard

What made you want to look up factor IX? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

skillful, artistic, or intricate

Get Word of the Day daily email!