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giant planet

[ jahy-uhnt plan-it ]
/ ˈdʒaɪ ənt ˈplæn ɪt /
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noun Astronomy.

any of the four largest planets in our solar system, which in order of size, from the largest, are Jupiter, Saturn, Uranus, and Neptune.

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Also called Jovian planet .
See also outer planet.

Origin of giant planet

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use giant planet in a sentence

British Dictionary definitions for giant planet

giant planet

noun

any of the planets Jupiter, Saturn, Uranus, and Neptune, characterized by large mass, low density, and an extensive atmosphere
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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