Mare Frigoris

[ fri-gawr-is, -gohr- ]
/ frɪˈgɔr ɪs, -ˈgoʊr- /

noun

(Sea of Cold) a dark plain in the northern hemisphere, in the first and second quadrants of the face of the moon: about 55 miles (90 km) wide at its narrowest width and 750 miles (1200 km) long: about 67,000 sq. mi. (174,000 sq. km).

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020