/ Dictionary / Index S sour cream: Meaning and Definition of Find definitions for: sour' cream" Pronunciation: [key] cream soured by the lactic acid produced by a ferment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sourcing sourdine 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