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outer planet
[ ou-ter plan-it ]
noun
, Astronomy.
- any of the planets in our solar system whose orbits lie beyond the asteroid belt, namely, Jupiter, Saturn, Uranus, and Neptune: before its reclassification as a dwarf planet in 2006, Pluto was included among the outer planets.
outer planet
noun
- any of the planets Jupiter, Saturn, Uranus, Neptune, and (formerly) Pluto, whose orbit lies outside the asteroid belt
outer planet
- Any of the four planets Jupiter, Saturn, Uranus, and Neptune, whose orbits lie outside that of Mars. The outer planets are large gas giants .
- Compare inner planetSee also superior planet
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Word History and Origins
Origin of outer planet1
First recorded in 1940–45
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Example Sentences
For consider the facts which characterise the movements of an outer planet such as Mars.
From Project Gutenberg
We'd better make the limits of your sovereignty the orbit of the outer planet of this system.
From Project Gutenberg
Speaking loosely, we may say that each outer planet is twice as far from the Sun as is the next inner one.
From Project Gutenberg
Le Verrier's prediction of an outer planet was a matter of dead certainty.
From Project Gutenberg
The useless outer planet remained a lush green, save for its seas.
From Project Gutenberg
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