The inhabitants of heaven.

A superlunary thing or person. rare.

A supposed inhabitant of the moon.

A dweller in the moon.

An inhabitant of a planet (usually, other than the earth).

(in folklore and science fiction) a small green-skinned (male) humanoid being, now spec. one from outer space; cf. little man, n. 5.

An inhabitant of a star. Cf. earthling, n.2

Originally Science Fiction. An (intelligent) being from another planet; an extraterrestrial.

a large group of people imagined as living and working in a space station or on another planet.

= alien, n. 5.

(a) n. an extraterrestrial being, an alien; (b) adj. extraterrestrial, alien.

A person or being from another world or planet, or away from the native world; an alien; an outsider. Cf. off-worlder, n.

A person or being from another world or planet; an alien.

= extra-terrene adj.

A member of a fictional humanoid alien race featuring in the U.S. television series Star Trek and in subsequent associated series, films…

Originally U.S. (A name for) a member of any of various supposed species of grey-skinned, humanoid, extraterrestrial beings. Usually in plural.