/ Dictionary / Index F fiat money: Meaning and Definition of Find definitions for: fi'at mon"ey Pronunciation: [key] paper currency made legal tender by a fiat of the government, but not based on or convertible into coin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fiat lux* fib Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language