| Christmas disease | |
| —n | |
| a relatively mild type of haemophilia, caused by lack of a protein (Christmas factor) implicated in the process of blood clotting | |
| [C20: named after S. Christmas, the first patient suffering from the disease who was examined in detail] | |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
Christmas disease Christ·mas disease (krĭs'məs)
n.
See hemophilia B.