noun, plural ses·ter·ti·i [se-stur-hee-ahy] /sɛˈstɜr hiˌaɪ/.
Origin of sestertius
Examples from the Web for sestertius
The best grew in the country of the Sabines, and were worth at Rome a sestertius, or 2d.
Sestertius was a silver coin, stamped on one side with Castor and Pollux, and on the opposite with the city.Roman Antiquities, and Ancient Mythology|Charles K. Dillaway
Though the sestertius, therefore, was originally a silver coin, its value was estimated in copper.