/ Dictionary / Index B BC soil: Meaning and Definition of Find definitions for: BC soil Pronunciation: [key] a soil with a profile having a B horizon and a C horizon but no A horizon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. B.C.S. BCS theory Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language