An extraordinary assembly of the houses of lords and commons, without the assent or summons of the sovereign. It can only be justified ex necessitate rei, as the parliament which restored Charles II., and that which disposed of the crown and kingdom to William and Mary. Wharton. Also the name of an old writ that lay for the breach of a covenant. In legislation . An assembly of delegates or representatives chosen by the people for special and extraordinary legislative purposes, such as the framing or revision of a state constitution . Also an assembly of delegates chosen by a political party , or by the party organization in a larger or smaller territory, to nominate candidates for an approaching election. State v. Metcalf, 18 S. D. 393, 100 N. W. 925, 67 L. R. A. 331; State v. Tooker, 18 Mont. 540, 46 Pac. 530, 34 L. R. A. 315; Schafer v. Whipple, 25 Colo. 400, 55 Pac. 180. Constitutional convention . See CONSTITUTION . In public and international law . A pact or agreement between states or nations in the nature of a treaty; usually applied (a) to agreements or arrangements preliminary to a formal treaty or to serve as its basis, or (b) international agreements for the regulation of matters of common interest but not coming within the sphere of politics or commercial intercourse , such as international postage or the protection of submarine cables. U. S. Comp. St. 1901, p. 3589; U. S. v. Hunter (C. C.) 21 Fed. 015