[mahr-ey kree-see-uh m, mair-ee] /ˈmɑr eɪ ˈkri si əm, ˈmɛər i/
(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).
[mair-ee klaw-suh m, mahr-ey; Latin mah-re klou-soo m] /ˈmɛər i ˈklɔ səm, ˈmɑr eɪ; Latin ˈmɑ rɛ ˈklaʊ sʊm/ noun 1. a body of navigable water under the sole jurisdiction of a nation. /ˈmɑːreɪ ˈklaʊsʊm/ noun 1. (law) a sea coming under the jurisdiction of one nation and closed to all others Compare mare liberum
Maritime European Communications Satellite
[er-i-three-uh m] /ˌɛr ɪˈθri əm/ noun 1. (Red Sea) an area in the southern hemisphere of Mars, appearing as a dark region when viewed telescopically from the earth.
[fey-koo n-di-tah-tis, fee-] /feɪˌkʊn dɪˈtɑ tɪs, fi-/ 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).