French in origin, this term means to preserve which has been a traditional French method of keeping food in storage for longer periods of time.During a time when there was a lack of refrigeration, foods were preserved in jars under layers of fat or syrups as a means to store the contents for future use.rench in origin, this term means to preserve which has been a traditional French method of keeping food in storage for longer periods of time.
Wiktionary(0.00 / 0 votes)Rate this definition: fiat currency(Noun) Money that has indirect market value or is given legal tender status by government fiat.
Verb [edit]. fiat â(third-person singular simple present fiats, present participle fiating, simple past and past participle fiated). ( 1 transitive, used in academic debate and role-playing games) To make (something) happen.ikipedia. fiat â(plural fiats). 1  An authoritative command or order to do something; an effectual decree. 2  1788, Alexander Hamilton, Federalist no.