[ ek-struh-plan-i-ter-ee ]

  1. existing or occurring in outer space beyond a planet, especially away from the planet Earth.

Origin of extraplanetary

First recorded in 1865–70; extra- + planetary

Words Nearby extraplanetary

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use extraplanetary in a sentence

  • Not necessarily, but it seems our iron-age man is fairly well informed in extraplanetary affairs.

    Blessed Are the Meek | G.C. Edmondson