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Webster 1913 Edition
Periastron
Perˊi-as′tron
,Noun.
[NL., fr. Gr.
περί
about + ἄστρον
a star.] (Astron.)
That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter.
Definition 2024
Periastron
periastron
periastron
See also: Periastron
English
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
Related terms
- periapsis
- pericenter
- pericynthion
- pericytherion
- perigalacticon
- perigee
- perihelion
- perijove
- perikron
- perilune
- perimelasma
- perinigricon
- periposeidon
- perisaturnium
- periselene