Lewis & Short

Mĭthras and Mĭthres, ae, m., = Μίθρας.

  1. I. The sun-god of the Persians, Stat. Th. 1, 717; Curt. 4, 13, 12; Mart. Cap. 2, § 191; Claud. Laud. Stil. 1, 63.
  2. II. The proper name of a priest of Isis, App. M. 11, p. 267, 35.
  3. III. A Roman surname, Inscr. Fab. p. 384, 38.
    Hence, Mithrĭăcus, a, um, adj., of or belonging to a Mithras (post-class.): sacra, Lampr. Commod. 9.