vicensima
vicensima, the twentieth part, a tax of one twentieth, tribute of five per cent
vīcēnsima (vicēs-, -suma) ae, f
- vicensimus; sc. pars, the twentieth part, a tax of one twentieth, tribute of five per cent.: vicensumas vendere, i. e. the tribute of one twentieth of the crop, L.: quod vectigal superest domesticum praeter vicensimam?i. e. of the market-value of a slave when emancipated: portorii, i. e. a duty of five per cent. on exports.