apastron

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See also: Apastron

English

WOTD – 15 May 2021

Etymology

A diagram illustrating the apastron between a star (the inner object) and a celestial object orbiting it.

From English apo- (prefix meaning ‘away from, separate’) + Ancient Greek ᾰ̓́στρον (ástron, “fixed star”), modelled after aphelion.[1] Ἄ̆στρον (Ástron) is derived from ᾰ̓στήρ (astḗr, “celestial body (including a star, planet, meteor, etc.)”) (ultimately from Proto-Indo-European *h₂eHs- (“to burn; to glow”)) + -ον (-on, suffix forming nominative, accusative and vocative singular nouns).

Pronunciation

Noun

apastron (plural apastrons or apastra)

  1. (astronomy) The point of greatest separation between a celestial object and the star which it orbits.
    Antonym: periastron

Alternative forms

Hypernyms

Coordinate terms

Translations

References

  1. ^ “apastron, n.”, in OED Online Paid subscription required⁠, Oxford: Oxford University Press, December 2012; “apastron, n.”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.

Further reading

Anagrams

Polish

Polish Wikipedia has an article on:
Wikipedia pl

Etymology

From Ancient Greek ἀπό- (apó-) + Ancient Greek ᾰ̓́στρον (ástron).

Pronunciation

Noun

apastron m inan

  1. (astronomy) apastron
    Antonyms: periastron, peryastron

Declension

Declension of apastron
singular plural
nominative apastron apastrony
genitive apastronu apastronów
dative apastronowi apastronom
accusative apastron apastrony
instrumental apastronem apastronami
locative apastronie apastronach
vocative apastronie apastrony

Further reading

Wikious
Boobota
Sagapedia