Lex Prœtoria

The præ-torian law. A law by which every freedman who made a will was commanded to leave a moiety to his patron. Inst 3, 8, 1. The term has been applied to the rules that govern in a court of equity. Gills Ch. pt 2. Other specific meanings of the word in Roman jurisprudence were as follows: Positive law, as opposed to natural. That system of law which descended from the Twelve Tables, and formed the basis of all the Roman law. The terms of a private covenant; the condition of an obligation. A form of words prescribed to be used upon particular ocoa-sions.

In medieval jurisprudence. A body or collection of various laws peculiar to a given nation or people; not a code in the modem sense, but an aggregation or collection of laws not codified or systematized. See Mackeld. Rom. Law, § 98. Also a similar collection of laws relating to a general subject, and not peculiar to any one people.
Defined under Lex in Black's Law Dictionary.