exoplanet

[ ek-soh-plan-it ]

nounAstronomy.

a planet that revolves around a star other than the sun.

Origin of exoplanet

First recorded in 1970–75; exo- + planet

Other words from exoplanet

ex·o·plan·e·tar·y, adjective

Words Nearby exoplanet

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use exoplanet in a sentence

Gliese 581g seemed to be the first rocky exoplanet to orbit its host star at the right distance for liquid water on its surface.
The Exoplanet That Wasn’t There | Matthew R. Francis | July 6, 2014 | THE DAILY BEAST
The story of Gliese 581g highlights how hard exoplanet-hunting is, and how science at its best is self-correcting.
The Exoplanet That Wasn’t There | Matthew R. Francis | July 6, 2014 | THE DAILY BEAST
Now the verdict is in: Gliese 581g is an ex-planet, not an exoplanet.
The Exoplanet That Wasn’t There | Matthew R. Francis | July 6, 2014 | THE DAILY BEAST
exoplanet astronomy—the search for planets orbiting other stars—has two major goals.
The Exoplanet That Wasn’t There | Matthew R. Francis | July 6, 2014 | THE DAILY BEAST
The same group of astronomers has also inferred a type of exoplanet that fits in between the rocky planets and the gas giants.
Mega-Earth Is the Weirdest Exoplanet Yet | Matthew R. Francis | June 8, 2014 | THE DAILY BEAST

British Dictionary definitions for exoplanet

exoplanet

/ (ˈɛksəʊˌplænɪt) /

noun

a planet that orbits a star in a solar system other than that of Earth

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

Scientific definitions for exoplanet

exoplanet

[ ĕk′sō-plăn′ĭt ]

Browse