1. other than one's homeworld; of another planet or place in the universe.
- 1919 A. Merritt Moon Pool (1994) № 355: Flashing out, and this only when the — face — bore its most human resemblance, into twin stars large almost as the crown of little moons; and with that same baffling suggestion of peep-holes into a world untrodden, alien, perilous to man!
- 1926 I. Edman Adam, Baby, & Man from Mars Journal of Philosophy (Aug. 19) № 449: Adam, the Baby, and the Man from Mars have always been invoked in the history of thought as the only three unprejudiced observers of the human scene — Adam, fresh from the hand of his Maker, the Baby new to earth and sky, and the Man from Mars on his first visit to an alien planet.
- 1939 E. Binder Impossible World (1967) № 13: At times, the breath of adventure wafted from the spaceways — tales of hidden lands on alien worlds, fabulous creatures and heroic deeds.
- 1939 F. B. Long, Jr. Dweller in Outer Darkness Thrilling Wonder Stories (Aug.) № 62/2: A crystal-encrusted barrow leading deep into alien earth.
- 1958 R. Silverberg Invaders from Earth (1987) № 17: Kennedy found himself staring at an alien landscape, oddly quiet, oddly disturbing.
- 1929 J. Williamson Sci. Wonder Stories (Aug.) № 243/1: I felt far more of it than I saw — a will, a cold and alien intellect, a being, malefic, inhuman, inscrutable. It was a thing that belonged, not in the present earth, but in the tomb of the unthinkable past, or beyond the wastes of interstellar space, amid the inconceivably [sic] horrors of unknown spheres.
- 1936 H. P. Lovecraft Astounding Stories (June) № 132/2: According to these scraps of information, the basis of the fear was a horrible elder race of half polypous, utterly alien entities which had come through space from immeasurably distant universes.
- 1975 C. L. Moore Bright Illusion Best of C. L. Moore (1978) № 79: They were more numerous than mankind's two, and their functions were entirely different. Reproduction here was based on an utterly alien principle.
- 1934 P. Barshofsky One Prehistoric Night Wonder Stories (Nov.) № 697/1: Tirelessly, the alien horde labored on, struggled to make this planet, yet in its infancy, theirs.
- 1942 A.E. van Vogt Astounding SF (July) № 26/1: That will be the result of my earlier presence, and will not recur now that so many alien presences have affected its — sanity!
- 1970 A. McCaffrey Ship Who Sang (1991) № 3: Helva scooted around in her shell [...] studying her lessons in trajectory, propulsion techniques, computation, logistics, mental hygiene, basic alien psychology, philology.
- 1977 F. Herbert Dosadi Experiment № 100: Aritch stared with distaste at the displayed hand. There were no webs between the alien fingers!
- 1991 SF Chronicle (May) № 24/1: A woman, carrying an alien child, is due to give birth.
- 1913 A. Meynell Christ in Universe Poems № 115: But in the eternities, Doubtless we shall compare together, hear A million alien Gospels, in what guise He trod the Pleiades, the Lyre, the Bear.
- 1944 F. Brown Arena Astounding SF (June) № 72/1: And an alien ship, all right.
- 1960 Gleaner (Kingston, Jam.) (Feb. 7) № 23/1: Scientists there were deeply disturbed by the prospect, not that Earth would be invaded by alien bacteria, but that we might "export" germs to the Moon.
- 1979 M. Z. Bradley Bloody Sun № 26: But this much concession had been made to custom of the alien Terrans, that some of the goods for sale were on racks and tables.
- 1987 M. Crichton Sphere № 15: Let's soften that to say "contact": alien contact.
- 1993 K. S. Robinson Red Mars № 89: They had stumbled upon a long-abandoned alien spaceport.
- 1931 E. E. Smith Amazing Stories (Sept.) № 557/1: I have thought of it at length. It is disgusting. Compelled to traffic with an alien form of life!
- 1946 A. B. Chandler Astounding SF (Mar.) № 127/1: A most definite alien life form.
- 1970 A. Norton Dread Companion (1984) № 44: A poohka was an alien life-form from off-world.
- 1985 S. Sucharitkul Alien Swordmaster № 5: We stopped to couple with every alien life form we conquered.




