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

      

    legality

     noun
    noun
    BrE BrE//liːˈɡæləti//
     
    ; NAmE NAmE//liːˈɡæləti//
     
    (pl. legalities)
     
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  1. 1[uncountable] the fact of being legal They intended to challenge the legality of his claim in the courts. The arrangement is of doubtful legality. The court ruling today upheld the legality of military tribunals. The government does not recognize the legality of this court.
  2. 2[countable, usually plural] the legal aspect of an action or a situation You need a lawyer to explain all the legalities of the contracts.
  3. compare illegality
    Word Origin late Middle English: from French légalité or medieval Latin legalitas ‘relating to the law’, from Latin legalis, from lex, leg- ‘law’.
See the Oxford Advanced American Dictionary entry: legality