From Longman Dictionary of Contemporary EnglishMartianMar‧tian /ˈmɑːʃən $ ˈmɑːr-/ noun [countable] TTSan imaginary creature from the planet Mars —Martian adjective
Examples from the Corpus
Martian• When you first enter the game a Martian guides you through the menu.• You can similarly obtain a Martian or Jovian perspective if you wish.• Every Martian knew that no Martian had a husband.• As I embarked on this project, then, I was not some Martian suddenly confronted with television.• The Martian is much niore interested in the typical wheat plant.• The Martian would be confused at this point and who can blame him.Origin Martian (1800-1900) Latin martianus “of Mars”, from Mars 