Noah Webster
Tetradrachma
TETRADRACH'MA, noun [Gr.] In ancient coinage, a silver coin worth four drachmas, 3s.sterling, or 66 2/3 cents; the drachma being estimated at 9d. sterling, or 16 2/3 cents.
TETRADRACH'MA, noun [Gr.] In ancient coinage, a silver coin worth four drachmas, 3s.sterling, or 66 2/3 cents; the drachma being estimated at 9d. sterling, or 16 2/3 cents.