Lewis & Short

dĭaerĕsis, is, f., = διαίρεσις.

  1. I. In gram., the dividing of one syllable into two, as aquaï for aquae, Serv. ad Verg. A. 7, 464.
  2. II. In rhet., a figure, pure Lat. distributio, distribution, Jul. Rufin. 21, p. 242.