a blood constituent necessary for clotting, the absence of which is characterized by a hemophilialike condition.
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Also called factor IX, plasma thromboplastic component.
Origin of Christmas factor
see origin at Christmas disease
Words nearby Christmas factor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Medical definitions for Christmas factor
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.