fiat Meaning, Definition & Usage

  1. noun a legally binding command or decision entered on the court record (as if issued by a court or judge)
    edict; decree; order; rescript.
    • a friend in New Mexico said that the order caused no trouble out there

WordNet

Fi"at noun
Etymology
L., let it be done, 3d pers. sing., subj. pres., fr. fieri, used as pass. of facere to make. Cf. Be.
Definitions
  1. An authoritative command or order to do something; an effectual decree.
    His fiat laid the corner stone. Willis.
  2. (Eng. Law) (a) A warrant of a judge for certain processes. (b) An authority for certain proceedings given by the Lord Chancellor's signature.

Webster 1913