Lewis & Short

† trĭĕtēris, ĭdis, f., = τριετηρίς.

  1. I. Lit., a space of three years, three years, Stat. S. 2, 6, 72; Mart. 9, 85, 9; 10, 53, 3; Aus. Caes. 3.
  2. II. Transf., a triennial festival; of the festival of Bacchus, Cic. N. D. 3, 23, 58; cf. trietericus.
    Of the Nemean games, Stat. Th. 4, 722; 7, 93.