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Meaning of Oceanus Procellarum

O•ce•a•nus Pro•cel•la•rum

Pronunciation: (ō"sē-ä'nus prō"su-lär'um, -an'us, ō"shē-), [key]
  1. (Ocean of Storms) the largest dark plain on the face of the moon, in the second and third quadrants: about 2 million square miles (5.2 million sq. km).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.