extraterrestrial

1 of 2

adjective

ex·​tra·​ter·​res·​tri·​al ˌek-strə-tə-ˈre-strē-əl How to pronounce extraterrestrial (audio)
-ˈres-chəl,
-ˈresh-chəl
: originating, existing, or occurring outside the earth or its atmosphere
extraterrestrial life

extraterrestrial

2 of 2

noun

: a being from another world : an extraterrestrial being

Examples of extraterrestrial in a Sentence

Recent Examples on the Web
Adjective
Share [Findings] Terrestrial bacteria can grow on extraterrestrial nutrients; the black hole nearest Earth was discovered in the constellation Telescopium; and X-ray experiments conducted at the European Synchrotron indicated that moisture is destroying The Scream. Rafil Kroll-Zaidi, Harper's Magazine, 24 Apr. 2024 This was the first time that scientists detected this compound in an extraterrestrial water ocean. Fabian Klenner, Discover Magazine, 22 Apr. 2024 See all Example Sentences for extraterrestrial 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'extraterrestrial.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

Adjective

1848, in the meaning defined above

Noun

1950, in the meaning defined above

Time Traveler
The first known use of extraterrestrial was in 1848

Dictionary Entries Near extraterrestrial

Cite this Entry

“Extraterrestrial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extraterrestrial. Accessed 3 May. 2024.

Kids Definition

extraterrestrial

adjective
ex·​tra·​ter·​res·​tri·​al
ˌek-strə-tə-ˈres-trē-əl
: coming from or existing outside the earth or its atmosphere
extraterrestrial life
extraterrestrial noun

More from Merriam-Webster on extraterrestrial

Last Updated: - Updated example sentences
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