/ Dictionary / Index G glyco-: Meaning and Definition of Find definitions for: glyco- Pronunciation: [key] a combining form with the meanings “sugar,” “glucose and its derivatives,” used in the formation of compound words: glycolipid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. glycine glycogen Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language