periastron

See also: Periastron

English

Etymology

From Ancient Greek περί (perí, “around”) + ἄστρον (ástron, “star”).

Pronunciation

• IPA^(key): /pɛɹɪˈæstɹən/

Noun

periastron (plural periastrons or periastra)

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

Antonyms

• apastron

Related terms

• see periapsis

Anagrams

• Pretorians, patroniser, portainers, pretorians