/ Dictionary / Index M Mare Australe: Meaning and Definition of Find definitions for: Ma're Aus•tral'e Pronunciation: (ô-stral'ē, -strā'lē), [key] (Southern Sea) an area near the south pole of Mars, appearing as a dark region when viewed telescopically from the earth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Mare Acidalium Mare Boreum Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language