/ Dictionary / Index B breccia: Meaning and Definition of Find definitions for: brec•ci•a Pronunciation: (brech'ē-u, bresh'-), [key] — n. Petrol. rock composed of angular fragments of older rocks melded together. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: breccia (Thesaurus) B. Rec. brecciate Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language