aphelion
[ uh-fee-lee-uhn ]
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Part of Speech noun
Origin + Etymology
alteration of modern Latin aphelium (by substitution of the Greek inflection -on ), from Greek aph' hēlion ‘from the sun'
Synonyms
  • point of apoapsis; apoapsis
Antonyms
  • perihelion
Definition
the point farthest from the sun in the path of an orbiting celestial body (such as a planet)
Example
The satellite arrived at the aphelion—the farthest point from the sun.
Usage Over Time

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