/ Dictionary / Index S space man: Meaning and Definition of Find definitions for: space' man". Pronunciation: [key] See space•man Pronunciation: (spās'man", -mun), [key] — pl. -men an astronaut. a visitor to earth from outer space; extraterrestrial. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spaceman (Thesaurus) spaceless space mark Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language