What is "nummus"

n. (cx historical English) Any of a range of low-value copper coins issued by the Roman and Byzantine empires during Late Antiquity.

Nummus: (, noummion), plural nummi is a Latin term meaning " coin", but used technically by modern writers for a range of low-value copper coins issued by the Roman and Byzantine empires during Late Antiquity. It comes from the Greek "nomos", which was used to describe a coin in some parts of southern Italy. The word was also used during the later years of the Roman Republic and the early Empire, either as a general word for a coin, or to describe the sestertius, which was the standard unit for keeping accounts.