from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A silver or bronze coin of ancient Rome equivalent to one fourth of a denarius.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. an ancient Roman coin made of bronze or silver, equalling a quarter of a denarius
from the GNU version of the Collaborative International Dictionary of English
- n. A Roman coin or denomination of money, in value the fourth part of a denarius, and originally containing two asses and a half, afterward four asses, -- equal to about two pence sterling, or four cents.
from The Century Dictionary and Cyclopedia
- n. A Roman coin: same as sestertius.
Latin sēstertius, a coin worth two and a half asses : sēmis, half; see sēmi- in Indo-European roots + tertius, third; see trei- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin sēstertius ("that is two-and-a-half"), from sēmis ("half") + tertius ("third"). (Wiktionary)