periastron

名词 n.
中文释义

英文释义

名词 n.
  1. That point of the orbit of a celestial body which is closest to the star around which the body is orbiting.

词形变化

periastrons plural periastra plural

词汇关系

反义词
apastron

词源

From Ancient Greek περί (perí, “around”) + ἄστρον (ástron, “star”).
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