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.
Such a move would threaten Cicero with financial ruin, not least because he had yet to receive a single sesterce from Hybrida.
And the fourth part of it, consisting of two asses and half of a third, they called "sesterce."
 The sesterce being worth about two-pence half-penny of English money, the salary of a Roman senator was, in round numbers, five thousand pounds a year; and that of a professor, as stated in the succeeding chapter, one thousand pounds.
The marriage formula with Ahenobarbus once uttered, while Quintus lived, and by no possibility, save by an open spoliation that would have stirred even calloused Rome, could Lucius touch a sesterce of his intended victim's property.
 I.e. $2,400,000; a sesterce was about 4 cents.
But since I have won every sesterce he owns I must needs pay for his board.
Once let the mob overtake them, and the lives of all three were not worth a sesterce.
Here centred those busy equites, the capitalists, whose transactions ran out even beyond the lands covered by the eagles, so that while Gaul was yet unconquered, Cicero could boast, "not a sesterce in Gaul changes hands without being entered in a Roman ledger."
"You will never get a sesterce of Cornelia's dowry," he declared.
A Sabine would use up a year to get in a sesterce from a frog pond.