- fiat
- fiat [fē′ät, fē′at, fē′ət; fī′at΄, fī′ət]n.[L, 3d pers. sing., pres. subj., of fieri, to become, come into existence < IE base * bheu- > BE]1. an order issued by legal authority, usually beginning with fiat (let it be done); decree2. a sanction; authorization3. any arbitrary order
English World dictionary. V. Neufeldt. 2014.