Home›Browse›E›extra-terrestrialextra-terrestrialOur editors are putting together more complete content — check back in about 20 minutesextra-terrestrialnoun · 1adjective · 1extra-terrestrial — nounnoun1. a living being from outside planet Earth1.nounDefinitiona living being from outside planet EarthExampleThe movie is about an extra-terrestrial visiting Earth.extra-terrestrial — adjectiveadjective1 sense1. relating to life or objects from outside Earth1.adjectiveDefinitionrelating to life or objects from outside EarthExampleScientists search for extra-terrestrial signals.