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Mare Undarum
[uhn-dahr-uhm]
noun
(Sea of Waves ) a dark plain in the first quadrant of the face of the moon: about 4,800 sq. mi. (12,000 sq. km).
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[uhn-dahr-uhm]
(Sea of Waves ) a dark plain in the first quadrant of the face of the moon: about 4,800 sq. mi. (12,000 sq. km).
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