What is Acts Of Sederunt?

Legal Definition
In the laws of Scotland, are ordinances for regulating the forms of proceeding, before the court of session, in the administration of justice, made by the judges, who have a delegated power from the legislature for that purpose. Ersk. Pr. L. Scot. B. 1, t. 1, s. 14.
-- Bouviers Law Dictionary
Legal Definition
In Scotch law. Certain ancient ordinances of the court of session, conferring upon the courts power to establish general rules of practice. Bell.
-- Black's Law Dictionary
Legal Definition
In Scotch law. Ordinances for regulating the forms of proceeding, before the court of session, in the administration of justice, made by the judges, who have the power by virtue of a Scotch act of parliament passed in 1540. Ersk. Prin. § 14.
-- Black's Law Dictionary
Legal Definition
Certain rules of court made by judges of the Scotch court of session.
-- Ballentine's Law Dictionary