apastronとは 意味・読み方・使い方

語源

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 かつ vocative singular nouns).

発音

• (Received 発音) IPA^(key): /æˈpæstɹ(ə)n/
• (General American) IPA^(key): /æˈpæstɹən/, [ə-]
• ハイフネーション: ap‧as‧tron

名詞

apastron (複数形 apastrons または apastra)

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

   Antonym: periastron

別の表記

• apoastron

上位語

• apoapsis

等位語

参照

Further reading

• apsis on Wikipedia.

アナグラム

• Pastrano