/ Dictionary / Index S San Diego: Meaning and Definition of Find definitions for: San Di•e•go Pronunciation: (san" dē-ā'gō), [key] a seaport in SW California: naval and marine base. 875,504. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sandie San Dimas Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language