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

    In; into; within; among.

  • In
    Black's Law Dictionary: 2nd Edition

    In the law of real estate, this preposition has always been used to denote the fact of seisin, title or possession, and apparently serves as an elliptical expression for seme such phrase as "in possession," or as an abbreviation for "intitled" or "invested with title." Thus, in the old books, a tenant is said to be "in by lease of his lessor." Litt. ยง 82.