Lewis & Short

rĕflexĭo, ōnis, f. [reflecto].

  1. I. A bending or turning back, reflection (post-class.): cervicis, Macr. S. 5, 11.
  2. II. Trop., the conversion of a proposition, App. Dogm. Plat. 3, p. 33, 34; Mart. Cap. 4, § 412.