/ Dictionary / Index E Equatorial Guinea: Meaning and Definition of Find definitions for: E'quato'rial Guin'ea Pronunciation: [key] a republic in W equatorial Africa, comprising the mainland province of Río Muni and the island province of Bioko: formerly a Spanish colony. 400,000; 10,824 sq. mi. (28,034 sq. km). Cap.: Malabo. Formerly, Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Equatorial Current equatorial plane Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language