Definitions

1. noun

A unit of measurement in the Roman system, equivalent to one-tenth of a denarius.

“The ancient Roman coinage system was based on a variety of denominations, including the decimus.”

2. noun

A Roman legionnaire ranking below a centurion.

“The decimus was a significant military rank in ancient Rome, often responsible for leading smaller units of soldiers.”

3. adjective

One-tenth or ten percent.

“The decimus of the population lived in poverty-stricken areas.”