Lewis & Short

Mnēmŏsynē, ēs, f., = Μνημοσύνη (remembrance).

  1. I. The mother of the Muses, Ov. M. 6, 114; Cic. N. D. 3, 31, 54; Phaedr. 3 prol. 18: natae Mnemosynes, the Muses, Aus. Ep. 4, 64.
  2. II. In plur.: Mnēmŏ-synae, ārum, f., the Muses, Aus. Idyll. 11, 30.