Latin edit

Alternative forms edit

Etymology edit

Blend of mare +‎ Ōceanus procellārum. Variation of Ōceanus procellārum; replacement of the rare "ōceanus" with the common "mare", where many features on the Moon are called the 'mare' (the maria), and only this one feature is called 'ōceanus'.

Proper noun edit

Mare procellārum n sg (genitive Maris procellārum); third declension

  1. (planetology) The Sea of Storms (Mare Procellarum): Synonym of Ōceanus procellārum; a basin in Nearside, Moon, Earth, Solar System