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TOEFL BNC: 13039 COCA: 6943

planetary

adjective

plan·​e·​tary ˈpla-nə-ˌter-ē How to pronounce planetary (audio)
1
a
: of, relating to, being, or resembling a planet
c
: having a motion like that of a planet
planetary electrons
d
: immense
the scope of this project has reached planetary proportions
2
a
: of, relating to, or belonging to the earth : terrestrial
b
: global, worldwide
planetary politics
3
: having or consisting of an epicyclic train of gear wheels

Example Sentences

a positively planetary new shopping development
Recent Examples on the Web Upcoming orbiters from the U.S. and Europe are set to reinvigorate the study of Venus, and many planetary scientists consider a future lander there inevitable. Jonathan O'callaghan, Scientific American, 28 July 2022 BepiColumbo will orbit Mercury from late 2025 to help planetary scientists figure out the mysterious planet’s core, surface, magnetic field and exosphere in an effort to better understand its origin and evolution. Jamie Carter, Forbes, 27 June 2022 In this case, planetary scientists know exactly where the samples came from. New York Times, 9 June 2022 And planetary scientists recently announced that NASA should prioritize sending a probe to Uranus in the next decade. Marina Koren, The Atlantic, 7 June 2022 This week sees the release of a second decadal survey, this one focused on the needs of astronomers and planetary scientists who focus on the objects in our Solar System. John Timmer, Ars Technica, 19 Apr. 2022 Meanwhile, planetary scientists have hoped for years to fly a spacecraft through the active plumes of gas and particles that erupt from Enceladus' interior ocean. Ashley Strickland, CNN, 19 Apr. 2022 The only planetary engine scientists have seen in reasonable detail is Earth’s. Robin George Andrews, Smithsonian Magazine, 21 Mar. 2022 But in 2019, planetary scientists had an epiphany while examining another of the gas giant’s features: its rings. Robin Andrews, Wired, 22 Feb. 2022 See More

Word History

First Known Use

1607, in the meaning defined at sense 1a

Time Traveler
The first known use of planetary was in 1607

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