perihelion 1
noundomain: location
Princeton WordNet [ver.3.1]
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EnglishDefinition
periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun
Hypernym
periapsis 1
noun
(astronomy) the point in an orbit closest to the body being orbited
EnglishAntonym
aphelion 1
noun
apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun
