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

 

appellant

 noun
noun
BrE BrE//əˈpelənt//
 
; NAmE NAmE//əˈpelənt//
 
(law)
 
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a person who appeals against a decision made in court Word Origin late Middle English: from French apelant, literally ‘appealing’, from the verb apeler, from Latin appellare ‘to address’, based on ad- ‘to’ + pellere ‘to drive’.
See the Oxford Advanced American Dictionary entry: appellant