[ ek-struh-plan-i-ter-ee ]
/ ˌɛk strəˈplæn ɪˌtɛr i /


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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for extraplanetary

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

    Blessed Are the Meek|G.C. Edmondson