outer planet

noun

Definition of outer planet

:any of the planets Jupiter, Saturn, Uranus, and Neptune whose orbits lie beyond the asteroid belt

Recent Examples of outer planet from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'outer planet.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of outer planet

1850


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