space alien

== English == === Noun === space alien (plural space aliens) (chiefly US) An extraterrestrial being; a visitor from outer space. ==== Usage notes ==== In American usage, an extraterrestrial being is often called a "space alien," since the unqualified term "alien" is commonly used to denote a U.S. resident who is not a U.S. citizen. ==== Synonyms ==== alien, ET, little green man ==== Translations ==== === See also === space invader