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Definition of Extraterrestrial
1. Noun. A form of life assumed to exist outside the Earth or its atmosphere. 
Exact synonyms: Alien, Extraterrestrial Being
Generic synonyms: Hypothetical Creature
Derivative terms: Alien
Generic synonyms: Hypothetical Creature
Derivative terms: Alien
2. Adjective. Originating or located or occurring outside Earth or its atmosphere. "Is there extraterrestrial life?"
Partainyms: Earth




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