Definition of Munchausen’s syndrome noun from the Oxford Advanced Learner's Dictionary

 

Munchausen’s syndrome

 noun
noun
BrE BrE//ˈmʊntʃaʊzənz sɪndrəʊm//
 
; NAmE NAmE//ˈmʊntʃaʊzənz sɪndroʊm//
 
[uncountable]
 
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a mental condition in which somebody keeps pretending that they are ill/sick in order to receive hospital treatment Word Origin 1950s: named after the character Baron Munchausen, who was the hero of a book of fantastic travellers' tales (1785) written in English by a German, Rudolph Erich Raspe.
See the Oxford Advanced American Dictionary entry: Munchausen’s syndrome