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

 

appurtenance

 noun
noun
BrE BrE//əˈpɜːtɪnəns//
 
; NAmE NAmE//əˈpɜːrtɪnəns//
 
[usually plural](formal or humorous)
 
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a thing that forms a part of something larger or more important Word Origin Middle English: from Old French apertenance, based on late Latin appertinere ‘belong to’, from ad- ‘to’ + Latin pertinere ‘to pertain’.
See the Oxford Advanced American Dictionary entry: appurtenance