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Mare Fecunditatis

[fey-koo n-di-tah-tis, fee-]
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noun
  1. (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).
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018