Lewis & Short

versātĭo, ōnis, f. [verso], a turning round.

  1. I. Lit.: machinarum, Vitr. 10, 1; 10, 6; 10, 8; 10, 10; 10, 14: oculi, Plin. 8, 33, 51, § 121.
  2. II. Trop., a changing, alteration, mutation: rerum sursum ac deorsum euntium, Sen. Tranq. 11, 10.