Fiat

n.	1.	An authoritative command or order to do something; an effectual decree. His fiat laid the corner stone. - Willis.
	2.	(Eng. Law) A warrant of a judge for certain processes. Fiat money irredeemable paper currency, not resting on a specie basis, but deriving its purchasing power from the declaratory fiat of the government issuing it.

Noun

1.

fiat - a legally binding command or decision entered on the court record (as if issued by a court or judge); "a friend in New Mexico said that the order caused no trouble out there" Synonyms: decree, edict, rescript, order

appointment, authority, authorization, brevet, bull, certification, clearance, countenance, declaration, decree, decree-law, decreement, decretal, decretum, dictum, diktat, edict, edictum, empowerment, enabling, endorsement, enfranchisement, entitlement, ipse dixit, law, ordinance, ordonnance, proclamation, pronouncement, pronunciamento, ratification, rescript, rule, ruling, sanction, senatus consult, senatus consultum, ukase, warrant, warranty