exoplanet

American  

[ek-soh-plan-it] / ˈɛk soʊˌplæn ɪt /

noun

Astronomy.

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

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exoplanet British  

/ ˈɛksəʊˌplænɪt /

noun

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

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exoplanet Scientific  

/ ĕk′sō-plăn′ĭt /

1. See extrasolar planet

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Other Word Forms

• exoplanetary adjective

Etymology

Origin of exoplanet

First recorded in 1970–75; exo- + planet

Example Sentences

This marked the first time an exoplanet had been directly imaged at optical wavelengths, and it was named Fomalhaut b following standard naming rules.

From Science Daily

What initially looked like a reflective exoplanet turned out to be something far more dramatic.

From Science Daily

Scientists using NASA's James Webb Space Telescope have identified a previously unknown kind of exoplanet, one whose atmosphere defies current ideas about how planets are supposed to form.

From Science Daily

This success attracted major support from NASA, the National Science Foundation, and private donors, and placed the observatory at the forefront of exoplanet science.

From Science Daily

It is similar to techniques used to search for atmospheres in the TRAPPIST-1 system and on other small rocky exoplanets.

From Science Daily