/ Dictionary / Index C CD-I: Meaning and Definition of Find definitions for: CD-I Pronunciation: [key] compact disk-interactive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. CD4 cDNA Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language