Skip to Content


Pronunciation: re-ver'sal


  1. A turning or changing to the opposite direction, as of a process, disease, symptom, or state.
  2. The changing of a dark line or a bright one of the spectrum into its opposite.
  3. Denoting the difficulty of some people in distinguishing the lowercase printed or written letter p from q or g, b from d, or s from z.
  4. In psychoanalysis, the change of an instinct or affect into its opposite, as from love into hate.

[L. reverto, pp. -versus, to turn back or about]

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.