Wordnet polsko-angielski 
                         (a form of life assumed to exist outside the Earth or its atmosphere) 
extraterrestrial being, extraterrestrial, alien 
synonim: kosmita
synonim: obcy
synonim: zielony ludzik
Nowoczesny słownik polsko-angielski 
                        extraterrestrial
little green man
ET
alien