Definition of German measles noun from the Oxford Advanced Learner's Dictionary

 

German measles

 noun
noun
BrE
 
; NAmE
 
(also rubella)[uncountable] Ailments and diseases
 
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a mild infectious disease that causes a sore throat and red spots all over the body. It can seriously affect babies born to women who catch it soon after they become pregnant. See related entries: Ailments and diseases
See the Oxford Advanced American Dictionary entry: German measles