/ Dictionary / Index E erythro-: Meaning and Definition of Find definitions for: erythro- Pronunciation: [key] a combining form meaning “red,” used in the formation of compound words: erythrocyte. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. erythritol erythroblast Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language