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- Dictionaryextraterrestrial/ˌɛkstrətɪˈrɛstrɪəl/
adjective
- 1. of or from outside the earth or its atmosphere: "searches for extraterrestrial intelligence"
noun
- 1. a hypothetical or fictional being from outer space.
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EXTRATERRESTRIAL definition: 1. in or coming from a place outside the planet Earth: 2. a creature from outside the planet…. Learn more.
The meaning of EXTRATERRESTRIAL is originating, existing, or occurring outside the earth or its atmosphere. How to use extraterrestrial in a sentence.
Extraterrestrial definition: outside, or originating outside, the limits of the earth. See examples of EXTRATERRESTRIAL used in a sentence.
Extraterrestrial means happening, existing, or coming from somewhere beyond the planet Earth. [ formal ] NASA has started a 10-year search for extraterrestrial intelligence.
Use the adjective extraterrestrial to describe anything that comes from or exists outside of the earth, like life on a distant planet, material from an asteroid, or even the sun.
Define extraterrestrial. extraterrestrial synonyms, extraterrestrial pronunciation, extraterrestrial translation, English dictionary definition of extraterrestrial. adj. Originating, located, or occurring outside Earth or its atmosphere: intelligent extraterrestrial life. n. An extraterrestrial being or life form....
OED's earliest evidence for extraterrestrial is from 1812, in the writing of John Thelwall, political reformer and lecturer. extraterrestrial is formed within English, by derivation. Etymons: extra- prefix, terrestrial adj. See etymology.
