Mare Crisium

[mahr-ey kree-see-uh m, mair-ee]

noun

(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).

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019