Definition of heir apparent noun from the Oxford Advanced American Dictionary

     

    heir apparent

     noun
    noun
     
    (pl. heirs apparent)heir apparent (to something)
     
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  1. 1an heir whose legal right to receive someone's property, money, or title cannot be taken away because it is impossible for someone with a stronger claim to be born
  2. 2a person who is expected to take the job of someone when that person leaves
See the Oxford Advanced Learner's Dictionary entry: heir apparent