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Definition of mastitis noun from the Oxford Advanced Learner's Dictionary

mastitis

noun
 
/mæˈstaɪtɪs/
 
/mæˈstaɪtɪs/
[uncountable] (medical)
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  1. painful swelling (= the condition of being larger or rounder than normal) of the breast or udder usually because of infection
    Word Originmid 19th cent.: from Greek mastos ‘breast’ + -itis.
See mastitis in the Oxford Advanced American Dictionary
trait
noun
 
 
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