Mare Fecunditatis

[fey-koo n-di-tah-tis, fee-]

noun

(Sea of Fertility) a dark plain in the fourth quadrant and extending into the first quadrant of the face of the moon: about 160,000 sq. mi. (415,000 sq. km).

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