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Definition of Crohn's disease noun from the Oxford Advanced American Dictionary

 

Crohn's disease

 noun
noun
NAmE//ˈkroʊnz dɪˌziz//
 
[uncountable]
 
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a disease affecting the lower intestines, in which they develop many sore areas. The disease lasts for many years and is difficult to cure.
See the Oxford Advanced Learner's Dictionary entry: Crohn's disease