Duumvir vs. Duumviri — What's the Difference?

A member of a duumvirate.

The duumviri (Latin for "two men"), originally duoviri and also known in English as the duumvirs, were any of various joint magistrates of ancient Rome. Such pairs of magistrates were appointed at various periods of Roman history both in Rome itself and in the colonies and municipia.Duumviri iuri or iure dicundo were the highest judicial magistrates in the cities of Italy and its provinces.

One of two persons jointly exercising the same office in Republican Rome.

Plural of duumvir

One of two Roman officers or magistrates united in the same public functions.