Definition of "saucerian"

The saucerians are here from another, dying, planetary system; they contact Marvin later, and now talk slowly enough to make themselves understood.

2017, Bill Warren, Keep Watching the Skies!

The “contactees” or “saucerians” surfaced in 1952 in southern California. They presented themselves as selected by superior beings from other planets for a special assignment—save the world.

2001, David A. Clary, Before and After Roswell, page 63