extra-terrestrial

A form of extraterrestrial — Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment.

Meanings

nounextra-terrestrial (plural extra-terrestrials)

plural extra-terrestrials

  1. alternativeAlternative form of extraterrestrial.
    1 more example

    If we were intelligent extra-terrestrials who "saw" only in the infra-red end of the spectrum, who got around only by squirming, who found it easier to visualize a Klein bottle in four-dimensional space than a torus in three dimensions, and for whom dissonance was a delight, then we would have a different mathematics.

    1995, John Heaton and Judy Groves, Introducing Wittgenstein, A Graphic Guide, page 132
Cite this entry
APA

extra-terrestrial. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/extra-terrestrial

MLA

“extra-terrestrial.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/extra-terrestrial. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “extra-terrestrial,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/extra-terrestrial.

Source: extra-terrestrial on Wiktionary, CC BY-SA 4.0.