Dictionary
Mar•tian
Pronunciation: (mär'shun), [key]—
adj.
of, pertaining to, or like the planet Mars or its hypothetical inhabitants.
—
n.
a supposed inhabitant of the planet Mars:
The science fiction novel was about the invasion of Earth by Martians. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.