/ Dictionary / Index S San Marcos: Meaning and Definition of Find definitions for: San Mar•cos Pronunciation: (san mär'kus), [key] a city in S central Texas. 23,420. a city in SW California. 17,479. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. San Manuel San Marino Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language