Christmas factor

Christmas factor

noun Biochemistry.
a blood constituent necessary for clotting, the absence of which is characterized by a hemophilialike condition.
Also called factor IX, plasma thromboplastic component.


Origin:
see Christmas disease
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Christmas factor is always a great word to know.
So is europium. Does it mean:
Symbol: Eu; atomic weight: 151.96; atomic number: 63
Symbol: He; atomic weight: 4.0026; atomic number: 2
American Heritage
Medical Dictionary

Christmas factor n.
See factor IX.

The American Heritage® Stedman's Medical Dictionary
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