apastron

[天]远星点

发音

UK /æˈpæstɹ(ə)n/
其它
US /æˈpæstɹən/
US /ə-/

词形变化

apastra apastrons 复数 apastrons apastra 复数

别名

apoastron

释义与例句

n.
  1. 1.

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

    天文

词源

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).

来源：wiktionary