{ Nun"di*nal (?), Nun"di*na*ry (?), }
a. [L. nundinalis, nundinarius, fr.
nundinae the market day, the weekly market, prop., the ninth
day, fr. nundinus belonging to nine days; novem nine +
dies day: cf. F. nundinal.] Of or pertaining to a
fair, or to a market day.
Nundinal letter, among the Romans, one of
the first eight letters of the alphabet, which were repeated
successively from the first to the last day of the year. One of these
always expressed the market day, which returned every nine days
(every eight days by our reckoning).