Lewis & Short

Nāsĭdĭus, a, name of a Roman gens.

    1. 1. L. Nasidius, a Roman knight, Cic. Phil. 7, 8, 24.
    2. 2. An adherent of Pompey, Caes. B. C. 2, 3; Cic. Att. 11, 17, 3.
      Hence, Nā-sĭdĭānus, a, um, adj., Nasidian: naves, Caes. B. C. 2, 7.