ribo-

pref.
  1. A five-carbon sugar:ribose.
  2. A monosaccharide that has three carbohydrate groups arranged in the manner of ribose:d-ribo-pentose.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.