Mare Cimmerium

[ si-meer-ee-uhm ]

noun
  1. (Cimmerian Sea) an area in the southern hemisphere of Mars, appearing as a dark region when viewed telescopically from the earth.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use Mare Cimmerium in a sentence

  • He squinted through the port at the gray gloom of the Mare Cimmerium.

    Valley of Dreams | Stanley Grauman Weinbaum