Full record for extraterrestrial n.

Definition	a creature not from Earth
OED requirements	antedating 1942
Earliest cite	Martin Pearson, The Embassy
Comment	Edward Bornstein submitted a 1954 cite from Robert Heinlein's "Star Lummox". Ben Ostrowsky submitted a 1951 cite from Mack Reynolds' "The Case of the Little Green Men". Cory Panshin submitted a cite from a reprint of Fredric Brown's "Honeymoon in Hell"; Mike Christie verified the cite in the 1950 first magazine appearance. Mike Christie submitted a 1949 cite from L. Sprague de Camp's "The Animal-Cracker Plot". Mike Christie submitted a 1942 cite from Martin Pearson's "The Embassy". Earliest cite in the OED: 1963.
Last modified	6 July, 2008

Citations for extraterrestrial n.

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1949 L. S. de Camp in Astounding Sci. Fiction July 80/1	He dreaded pricking the Dzlieri with the knife-point and bringing the extraterrestrial up with a roar of rage, but he had to take the chance.
1951 M. Reynolds Case of Little Green Men 38	‘Listen, Harry‥. You hired me to check on whether or not any extra-terrestrials—’ I'd picked up that word in the stories I'd been reading all afternoon—‘were hanging around your affairs. I don't think sitting here reading your magazine is going to get me very far along in that direction.’
1953 R. A. Heinlein Starman Jones (1975) iii. 37	He saw the first extra-terrestrial, an eight-foot native of Epsilon Gemini V.
1983 R. Short Gospel from Outer Space v. 61	Instead of Peter Pan‥we have E.T., the little ‘extra-terrestrial’ who also introduces children to flying but also wants to ‘go home’.
1987 O. Butler Dawn (1991) i. ii. 11	You're one of the few English speakers who never considered that she might be in the hands of extraterrestrials.
1988 S. McCrumb Bimbos of Death Sun xii. 157	An assortment of medieval dignitaries and extraterrestrials sipped grapefruit punch (listed on the menu as Pangalactic Gargleblaster).
1991 A. D. Foster Cat.a.lyst ix. 133	One o' his theories claimed that these here Nazca lines were made by the locals to help extraterrestrials' spaceships land here.
1992 Sci. Fiction Age Nov. 14/2	Most readers are going to recognize the feeling, even if they've never had it about extraterrestrials.