extraterrestrial being extraterrestrial • extraterrestrial object · · · Info · Definitions · Synonyms · Characters · · extraterrestrial being · · Text Common · · Latin · · Scripts 22 · · Length 6 · · Syllables Definitions · · · (noun) a form of life assumed to exist outside the Earth or its atmosphere. Synonyms: extraterrestrial being, extraterrestrial, alien. · · Noun Definition 1 Synonyms · · · extraterrestrial · · Synonym 1 alien · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 x latin small letter x U+0078