/ Dictionary / Index B binary-coded decimal system: Meaning and Definition of Find definitions for: bi'na•ry-cod•ed dec'imal sys"tem Pronunciation: (bī'nu-rē-kō"did, -ner-ē-), [key] a numerical system in which each decimal digit is represented by a unique collection of binary digits, not necessarily the same as those used in binary notation. Abbr.: BCD Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. binary code binary color Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language