/ Dictionary / Index S South Australia: Meaning and Definition of Find definitions for: South' Austral'ia Pronunciation: [key] a state in S Australia. 1,285,033; 380,070 sq. mi. (984,380 sq. km). Cap.: Adelaide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. South Atlantic Current South Bend Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language