Definitions from Black's Law Dictionary: 2nd Edition and Ballentine's Law Dictionary as are available for each term in each dictionary.
  • Ballentine's Law Dictionary

    Within the powers or authority. Cf. Ultra vires.

  • Black's Law Dictionary: 2nd Edition

    An act is said to be intra vires ("within the power") of a person or corporation when it is within the scope of his or its powers or authority. It is the opposite of ultra vires, (q. v.) Pittsburgh, etc., R. Co. v. Dodd, 115 Ky. 176, 72 S. W. 827.