/ Dictionary / Index J J.C.C.: Meaning and Definition of Find definitions for: J.C.C. Pronunciation: [key] Junior Chamber of Commerce. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. J.C.B. J.C.D. Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language