T / trĭentārĭus
adjective

trĭentārĭus

fem. trĭentāria · neut. trĭentārium
triens, II. B.
belonging to a third part; a third of one per cent; four per cent
of or belonging to a third part: faenus, i. e. a third of one per cent. monthly, or, in our manner, four per cent. a year, Capitol. Anton. P. 2; Lampr. Alex. Sev. 21, 1.