Medical Dictionary

factor IX

noun \-ˈnīn\

Medical Definition of FACTOR IX

:  a clotting factor whose absence is associated with Christmas disease—called also autoprothrombin II, Christmas factor


July 04, 2015
stringent Hear it
rigorous, strict, or severe
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears