an old Roman coin, originally of silver, later of brass or copper, equal to denarius
Origin of sesterceClassical Latin sestertius (nummus), for semis tertius, two and a half, because equal in value to two and a half asses: see nummular
A silver or bronze coin of ancient Rome equivalent to one fourth of a denarius.
Origin of sesterceLatin s&emacron;stertius, a coin worth two and a half asses : s&emacron;mis, half; see s&emacron;mi- in Indo-European roots + tertius, third; see trei- in Indo-European roots.
From Latin sÄ“stertius (“that is two-and-a-half"), from sÄ“mis (“half") + tertius (“third").