Quinquagesĭma
sc.
pars.
1.
A Roman tax of the fiftieth part, or two per cent. on the value of all slaves who were
sold. It was instituted by Augustus (Dio Cass. lv. 31).
2.
A similar tax at Athens (
πεντηκοστή) levied on exports and
imports. See
Pentecosté.