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Mare-australe

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• Mare-boreum

  [bawr-ee-uh m, bohr-] /ˈbɔr i əm, ˈboʊr-/ noun 1. (Northern Sea) an area near the north pole of Mars, appearing as a dark region when viewed telescopically from the earth.

• Mare-chronium

  [kroh-nee-uh m] /ˈkroʊ ni əm/ noun 1. an area in the southern hemisphere of Mars, appearing as a dark region when viewed telescopically from the earth.

• Mare-cimmerium

  [si-meer-ee-uh m] /sɪˈmɪər i əm/ noun 1. (Cimmerian Sea) an area in the southern hemisphere of Mars, appearing as a dark region when viewed telescopically from the earth.

• Mare-crisium

  [mahr-ey kree-see-uh m, mair-ee] /ˈmɑr eɪ ˈkri si əm, ˈmɛər i/ noun 1. (Sea of Crises) a dark plain in the first quadrant of the face of the moon: about 66,000 sq. mi. (170,000 sq. km).

• Mare-clausum

  [mair-ee klaw-suh m, mahr-ey; Latin mah-re klou-soo m] /ˈmɛər i ˈklɔ səm, ˈmɑr eɪ; Latin ˈmɑ rɛ ˈklaʊ sʊm/ noun 1. a body of navigable water under the sole jurisdiction of a nation. /ˈmɑːreɪ ˈklaʊsʊm/ noun 1. (law) a sea coming under the jurisdiction of one nation and closed to all others Compare mare liberum

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