PERIHELION

perihelion

(noun) periapsis in solar orbit; the point in the orbit of a planet or comet where it is nearest to the sun

Source: WordNet® 3.1

Etymology

Noun

perihelion (plural perihelia)

(astronomy) The point in the elliptical orbit of a planet or comet etc. where it is nearest to the Sun

Antonyms

• aphelion

Source: Wiktionary

Per`i*hel"ion, Per`i*he"li*um, n.; pl. Perihelia. Etym: [NL., fr. Gr. (Astron.)

Definition: That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to Ant: aphelion.

Source: Webster’s Unabridged Dictionary 1913 Edition

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