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Perihelion
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Perihelion
noun
(pl.
perihelia
)
1.
Periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun.
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Etymology of 'Perihelion'
WordNet 3.0 © 2010 Princeton University
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Words linked to "Perihelion" :
aphelion
,
point of periapsis
,
periapsis
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