- existing or occurring in outer space beyond a planet, especially away from the planet Earth.
Origin of extraplanetary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for extraplanetary
Historical Examples of extraplanetary
Not necessarily, but it seems our iron-age man is fairly well informed in extraplanetary affairs.Blessed Are the Meek