Dictionary.com
definitions
  • synonyms

R.O.

See more synonyms for R.O. on Thesaurus.com
  1. Receiving Office.
  2. Receiving Officer.
  3. Regimental Order.
  4. British. Royal Observatory.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018