/ Dictionary / Index F Fonseca: Meaning and Definition of Find definitions for: Fon•se•ca Pronunciation: (fon-sā'ku Sp. fôn-se'kä), [key] a bay of the Pacific Ocean in W Central America, bordered by El Salvador on the W, Honduras on the NE, and Nicaragua on the S. ab. 700 sq. mi. (1800 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Fong fons et origo* Related Content Daily Word Quiz: ephemeral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language