1. The process of referring a state legislative act, a state constitutional amendment, or an important public issue to the people for final approval by popular vote. [Cases: Constitutional Law 9; Statutes 341–367. C.J.S. Constitutional Law §§ 7, 11–12, 14; Statutes§§ 108–113, 115–126, 128–138, 140–144.]
2. A vote taken by this method.
3. Int’l law. An ambassador’s request for instructions on subject matter that the ambassador does not have sufficient power to address. Pl. referendums, referenda. Cf. INITIATIVE.