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

    From which.

  • Black's Law Dictionary: 2nd Edition

    A term used, with the correlative ad quern, (to which,) in expressing the computation of time, and also of distance in space. Thus, dies a quo, the day from which, and dies ad quem, the day to which, a period of time is computed. So, terminus A quo, the point or limit from which, and terminus ad quem, the point or limit to which, a distance or passage in space is reckoned.

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