exoplanet

noun

exo·​plan·​et ˈek-sō-ˌpla-nət 

ˌek-sō-ˈpla-

: a planet orbiting a star that is not our sun

Examples of exoplanet in a Sentence

Recent Examples on the Web

This is the effect astronomers can exploit using HWO to look for signs of an exoplanet’s atmosphere. — Phil Plait, Scientific American, 2 Oct. 2026

Magnetic fields have implications for the structure of exoplanets and their atmospheres, according to Berger. — Jacopo Prisco, CNN Money, 2 Oct. 2026

The imaging of these forming exoplanets (or extrasolar planets, worlds outside of our solar system), comes courtesy of the 66 radio antennas that comprise the Atacama Large Millimeter/ submillimeter Array (ALMA). — Robert Lea, Space.com, 30 Sep. 2026

In comparison, the likeliest exoplanets to host life orbit red dwarfs, the galaxy’s most common stars. — Andrew Paul, Popular Science, 23 Sep. 2026

Word History

First Known Use

1992, in the meaning defined above

Rhymes for exoplanet

• pomegranate
• gannet
• granite
• planet
• intranet