Meanings
nounChristmas disease (uncountable)
- uncountablehaemophilia B
Synonyms & antonyms
nouna clotting disorder similar to hemophilia A but caused by a congenital deficiency of factor IX
Similar
Broader
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
Christmas + disease Named for Stephen Christmas, the first patient described with the disease.
Full word history & related roots →Cite this entry
APA
Christmas disease. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Christmas%20disease
MLA
“Christmas disease.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Christmas%20disease. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “Christmas disease,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Christmas%20disease.
Source: Christmas disease on Wiktionary, CC BY-SA 4.0.