| Definition | a living being of extraterrestrial origin |
| OED requirements | antedating 1937 |
| Earliest cite | Arthur K. Barnes, Thrilling Wonder Stories |
| Comment | Sue Surova has submitted a 1968 cite from "The Making of Star Trek". Ben Ostrowsky submitted a 1951 cite from Mack Reynolds' "The Case of the Little Green Men". Mike Christie submitted a cite from a 1984 reprint of Andre Norton's 1970 "Dread Companion". Mike Christie submitted a cite from a 1984 reprint of David Samuelson's 1980 "Critical Mass: The Science Fiction of Frederik Pohl". Enoch Forrester submitted a cite from a reprint of Larry Niven's "World of Ptavvs"; Mike Christie verified the cite in the 1965 original magazine appearance. Enoch Forrester submitted a cite from a reprint of Alan Dean Foster's "The Tar-Aiym Krang"; Douglas Winston verified the cite in the 1972 first edition. Enoch Forrester submitted a 1946 cite from A. Bertram Chandler's "Lady Dog". Fred Galvin submitted a cite from an editorial blurb in Comet magazine for July 1941. Fred Galvin submitted a 1937 cite from an author's note by Arthur K. Barnes in Thrilling Wonder Stories. Rick Hauptmann submitted a 1931 cite for the form "alien form of life" from E.E. Smith's "Spacehounds of IPC"; we would still like pre-1937 cites for the usual form. |
| Last modified | 2 July, 2009 |
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| 1931 Amazing Stories Sept. 557/1, | I have thought of it at length. It is disgusting. Compelled to traffic with an alien form of life! |
| 1940 Thrilling Wonder Stories Jan. 120/1 | For just as on Earth sentient life can exist in the freezing Arctic wastes, the torrid jungles, the sea's greatest depths—so we know it is possible for alien, unique life-forms to exist on each of our planetary neighbors, equipped mysteriously to combat every force known to science. |
| 1951 M. Reynolds Case of Little Green Men 18 | We want to employ you to investigate the presence of such alien life forms. |
| 1965 L. Niven in Worlds of Tomorrow Mar. 25/1 | If Kzanol had not spent so many years controlling alien life forms, growing used to the feel of alien thoughts, his whole personality would have been drowned. |
| 1970 ‘A. Norton’ Dread Companion (1984) 44 | A poohka was an alien life-form from off-world and created with its small, furry body the instant desire to cuddle—a perfect pet. |
| 1972 A. D. Foster Tar-Aiym Krang 122 | While engaged in exploration and colonization, he had encountered many other alien life-forms. |