/ Dictionary / Index P Pacifica: Meaning and Definition of Find definitions for: Pa•cif•i•ca Pronunciation: (pu-sif'i-ku), [key] a city in W California, S of San Francisco. 36,866. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pacific pacifically Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language