Word.ws English Dictionary

apastron

Syllables: ap·as·tron/æˈpæstɹ(ə)n/US/æˈpæstɹən/

apastron noun: the point of greatest separation between a celestial object and the star which it orbits.

apastron: the point of greatest separation between a celestial object and the star which it orbits
Image: Pearson Scott Foresman, Public domain, via Wikimedia Commons

Noun

apastron (plural apastrons or apastra)

  1. The point of greatest separation between a celestial object and the star which it orbits.
    Antonyms:
    periastron

apastron meaning in Persian

apastron in Persian

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

Antonyms of apastron

Forms of apastron

pluralapastrons
pluralapastra
alternative formapoastron

Origin of apastron

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).

Questions about apastron

What does apastron mean?
Apastron means the point of greatest separation between a celestial object and the star which it orbits.
What is apastron in Persian?
Apastron in Persian is اپاستار (apâstâr). See Apastron meaning in Persian.
What part of speech is apastron?
Apastron is a noun.
How do you pronounce apastron?
Apastron is pronounced /æˈpæstɹ(ə)n/ (UK).
What is the plural of apastron?
The plural of apastron is apastrons.

Words near apastron in the dictionary

  1. apartotels
  2. apas
  3. apastatin
  4. Apastepeque
  5. apastra
  6. apastron
  7. apastrons
  8. Apatani
  9. apatelodid
  10. apatelodids
  11. apatemyid

Source and license

Adapted from Wiktionary: apastron (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-I learned some phrases-apastron.wav.

Cite this entry: “apastron.” Word.ws, https://word.ws/apastron. Based on Wiktionary, CC BY-SA 4.0.