aphelion

[ uh-fee-lee-uhn ]

Part of Speech

noun

Definition

the point farthest from the sun in the path of an orbiting celestial body (such as a planet)

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

Example

The satellite arrived at the aphelion—the farthest point from the sun.

Usage Over Time

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