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extraterrestrial

[ ek-struh-tuh-res-tree-uhl ]
/ ˌɛk strə təˈrɛs tri əl /
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adjective
outside, or originating outside, the limits of the earth.
noun
an extraterrestrial being: a science fiction novel about extraterrestrials conquering the earth.
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Origin of extraterrestrial

First recorded in 1865–70; extra- + terrestrial

OTHER WORDS FROM extraterrestrial

ex·tra·ter·res·tri·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use extraterrestrial in a sentence

British Dictionary definitions for extraterrestrial

extraterrestrial
/ (ˌɛkstrətɪˈrɛstrɪəl) /

adjective
occurring or existing beyond the earth's atmosphere
noun
(in science fiction) a being from beyond the earth's atmosphere
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for extraterrestrial

extraterrestrial
[ ĕk′strə-tə-rĕstrē-əl ]

Originating, located, or occurring outside the Earth or its atmosphere.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for extraterrestrial

extraterrestrial
[ (ek-struh-tuh-res-tree-uhl) ]

A descriptive term for things outside the Earth, such as possible civilizations outside the solar system, or objects, such as meteorites, that actually reach the Earth.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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