Full record for extraterrestrial adj.

Definition existing or originating outside the earth or its atmosphere.
OED requirements antedating 1868
Last modified 31 July, 2019

Citations for extraterrestrial adj.

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1949 L. S. de Camp in Astounding Sci. Fiction July 69/1, I know more about extraterrestrial life than most professional xenologists.
1964 P. K. Dick War with Fnools in We Can Remember It Wholesale (1994) 52 The Fnool reached the elevator and without hesitation pressed the button; some extra-terrestrial Fnoolian knowledge guided its hand.
1967 P. K. Dick Faith of our Fathers in We can remember It for you Wholesale (1994) 268 Was it the aquatic horror shape? The thing with slime and teeth, the extraterrestrial life form?
1970 A. McCaffrey Ship who Sang (1991) i.3 Helva's civilization was not without busy, do-good associations, exploring possible inhumanities to terrestrial as well as extraterrestrial citizens.
1984 D. Brin Practice Effect i.iii. 13 You may thank our extraterrestrial friend here for making up my mind for me.
1985 S. Sucharitkul Alien Swordmaster i. ii. 11 They would happen to be the first extraterrestrial civilization humans would encounter.
1987 M. Crichton Sphere 17 He reviewed the published speculations on extraterrestrial life.
1987 G. Bear Forge of God (1988) 12 Dr. Drinkwater maintains that there are no intelligent extraterrestrial civilizations.
1988 A. C. Clarke 2061: Odyssey Three 71 It should cut out all Earth-related references–they would certainly number in the millions–and concentrate entirely on extraterrestrial citations.
1992 SFRA Rev. July—Aug.—Sept. 14 A good example?ties together journeys to ‘another world in space’?and ‘leading exponents today of large-scale efforts to establish contact with extraterrestrial civilizations’.
1994 Analog Science Fiction & Fact Jan. 8/1 One good approach might be some sort of ‘interstellar homesteading’ concept, whereby nations and companies can claim extraterrestrial land that they actually use.