Dictionary

inner planet

noun

Definition of INNER PLANET

:  any of the planets Mercury, Venus, Earth, and Mars whose orbits are within the asteroid belt
ADVERTISEMENT

First Known Use of INNER PLANET

1951

Browse

Next Word in the Dictionary: inner postPrevious Word in the Dictionary: inner phaseAll Words Near: inner planet
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears