/ Dictionary / Index C CCC: Meaning and Definition of Find definitions for: CCC Pronunciation: [key] Civilian Conservation Corps: the former U.S. federal agency (1933–1943), organized to utilize the nation's unemployed youth by building roads, planting trees, improving parks, etc. Commodity Credit Corporation. CCC Pronunciation: [key] — Symbol. a quality rating for a corporate or municipal bond, lower than B and higher than CC. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ccc (Thesaurus) C.C.A. CCD Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language