/ Dictionary / Index C Commerce City: Meaning and Definition of Find definitions for: Com'merce Cit'y Pronunciation: [key] a city in central Colorado. 16,234. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. commerce commercial 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