Nummus

Latin form of the Greek nómos, later translated back again as the Greek noúmmos; originally it was the general word for 'coin'; the abbreviation N. = nummus, a heavy bronze coin from Teate and Venusia in Apulia (3rd cent. BC). Then N. mostly = sestertius, often abbreviated to N., at first with the addition and later without, Greek noúmmos (nomos). The Greek noúmmos and nummus were also the other names for the follis.