Lewis & Short

temōnārĭus, a, um, adj. [2. temo], of or belonging to the commutation for recruits: onera, Cod. Just. 12, 24, 1. functio, Cod. Th. 11, 16, 14.
As subst.: temōnā-rĭus, ii, m., a collector of the commutation for recruits, Cod. Just. 12, 29, 2.