any of the four planets with orbits outside the orbit of Mars, namely, the planets Jupiter, Saturn, Uranus, and Neptune.
Exoplanets And Planets: The Truth Is Out ThereExoplanets are in the news, and not just because Google did a doodle on them, either. On February 22, 2017, news of the discovery of seven new exoplanets was announced by NASA. This may be a new word for you non-NASA geeks out there. Let’s examine the difference between planets and exoplanets. A planet is sometimes also called a major planet. It’s any of the …
A massive new planet in our solar system named Tyche? Maybe. But what does “Tyche” mean?There may be a new planet joining the solar system. A provocative hypothesis posed by a duo of planetary astronomers from the University of Louisiana-Lafayette includes the existence of the planet Tyche: a ninth planet estimated to be four times the size of Jupiter located somewhere at the outermost reaches of the solar system. It’s hard to know what is more enjoyable: stories about planets …
- outer barrister,
- outer ear,
- outer garments,
- outer hebrides,
- outer mongolia,
- outer product,
- outer space,
Compare inner planet.
Origin of outer planet
First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for outer planet
I've heard of it, but as this is my first outer-planet voyage, I know nothing about it.The Sargasso of Space|Edmond Hamilton
any of the planets Jupiter, Saturn, Uranus, Neptune, and (formerly) Pluto, whose orbit lies outside the asteroid belt
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
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 planet. See also superior planet.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.