Lewis & Short

mĭnuscŭlārĭus, a, um, adj. [minusculus],

  1. I. small, petty, paltry, trifling (postclass.): minuscularii aquaeductus, Cod. Just. 11, 42, 10: res, id. ib. 1, 55, 1.
  2. II. Subst.: mĭnuscŭlārĭus, i, m., a collector of small taxes, in detail, opp. to the receiver-general, Cod. Th. 11, 28, 3 (al. minicularii); cf. in full: minuscularii vectigalium conductores (al. minutularii in the same sense), Aug. Civ. Dei, 7, 4.