Definition of "outworlder"

It is a thing no outworlder may know except those very few who have been involved.

1967, “Amok Time”, in Star Trek: The Original Series, season 2, spoken by Spock (Leonard Nimoy)

He speaks with the outworlder tongue!What else were you expecting from a male, sister Dykstra?

1995, Among Friends And Enemies, Part 3: The Magical Mystery Tour (Gen13), volume 2, number 3 (comic), page 19

Let each government make sure that rich and poor alike, dirtborn and outworlder, Terran and Variant, all have equal access to the outernet and its resources.

1998, Celia S. Friedman, This Alien Shore