/ Dictionary / Index C catalog code: Meaning and Definition of Find definitions for: cat'alog code" Pronunciation: [key] — Library Science. Library Science. the principles, rules, and regulations for entering and describing books or other library material in a catalog. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. catalog cataloger Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language