Perihelion Definition

pĕrə-hēlē-ən, -hēlyən
perihelia, perihelions
noun
perihelia
The point nearest the sun in the orbit of a planet, comet, or man-made satellite.
Webster's New World
Antonyms:
aphelion

Other Word Forms of Perihelion

Noun

Singular:
perihelion
Plural:
perihelia, perihelions

Origin of Perihelion

  • Alteration of New Latin perihēlium peri– Greek hēlios sun sāwel- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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perihelion