apastron

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 ap- (prefix meaning ‘away from, separate’) + Ancient Greek ᾰ̓́στρον (ắstron, “fixed star”), modelled after aphelion. Ἄ̆στρον (Á̆stron) is derived from ᾰ̓στήρ (ăstḗr, “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

• (Received Pronunciation) IPA^(key): /æˈpæstɹ(ə)n/

• Audio (Southern England):

  (file)

• (General American) IPA^(key): /æˈpæstɹən/, [ə-]
• Hyphenation: ap‧as‧tron

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

• apoastron

Hypernyms

• apoapsis

Coordinate terms

• aphelion
• apoareion
• apocynthion
• apogalacticon
• apogee
• apohermion
• apojove
• apokrone, apokron
• apolune
• aponigricon
• aposaturnium
• aposelene

Translations

point of greatest separation between a celestial object and the star which it orbits

• Bulgarian: апастрий m (apastrij)
• Finnish: apastroni
• German: Apastron (de)
• Irish: apastrón m
• Persian: اپاستار (apâstâr)
• Polish: apastron m
• Portuguese: apoastro m
• Slovak: apoastrón m

Further reading

• apsis on Wikipedia.Wikipedia

Anagrams

• Pastrano

Polish

Etymology

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

Pronunciation

• IPA^(key): /aˈpas.trɔn/

• Audio:

  (file)

• Rhymes: -astrɔn
• Syllabification: a‧pas‧tron

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

• “apastron”, in Polish dictionaries at PWN‎^[1] (in Polish)