perigee

n. 近地点

发音

UK /ˈpɛɹ.ɪ.d͡ʒiː/
US /ˈpɛɹ.ə.d͡ʒi/

词形变化

perigees 复数 perigees

别名

perigeum

释义与例句

n.
  1. 1.

    The point, in an orbit about the Earth, that is closest to the Earth: the periapsis of an Earth orbiter.

    近地点

    天文
  2. 2.

    The point, in an orbit about any planet, that is closest to the planet: the periapsis of any satellite.

    天文
  3. 3.

    The point, in any trajectory of an object in space, where it is closest to the Earth.

词汇关系

名词

反义词 1

apogee

上位词 1

periapsis

词源

From French périgée via Latin perigeum, perigaeum, ultimately from Ancient Greek περί (perí, “near”) + γῆ (gê, “Earth”).

来源：wiktionary