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 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

Led by Daniel Apai, a professor of astronomy and planetary sciences at the U of A's Steward Observatory, Pandora is specifically intended to study exoplanet atmospheres and their host stars.

From Science Daily

Identifying a superionic phase in the inner core could also improve our understanding of magnetic and thermal evolution in other rocky planets and exoplanets.

From Science Daily

Fewer than 100 exoplanets have been photographed so far, and even the largest ones appear only as featureless points of light.

From Science Daily