Skip to Content

ortho-

 

Definition:

  1. Prefix denoting straight, normal, in proper order.
  2. In chemistry, italicized prefix denoting that a compound has two substitutions on adjacent carbon atoms in a benzene ring. For terms beginning ortho- or o-, see the specific name.
  3. The most hydrated of a series of oxoacids, orthophosphoric acid, H3PO4.

[G. orthos, correct]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.

Hide