01 n. An authoritative command or order to do something; an effectual decree.
-
1.
An authoritative command or order to do something; an effectual decree.“His fiat laid the corner stone.” — Willis.
-
2.
A warrant of a judge for certain processes.(Eng. Law)
Phrases & compounds
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.