PERIASTRON

Etymology

Noun

periastron (plural periastrons)

(astronomy) That point of the orbit of a celestial body which is closest to the star around which the body is orbiting.

Antonyms

• apastron

Anagrams

• Pretorians, patroniser, portainers, pretorians

Source: Wiktionary

Per`i*as"tron, n. Etym: [NL., fr. Gr. (Astron.)

Definition: That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter.

Source: Webster’s Unabridged Dictionary 1913 Edition

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