1. I〔遊星〕a planet
    • 惑星間の
    • interplanetary
    • 内[外]惑星
    • an inner [outer] planet
  1. II〔ダークホース〕
    • 政界の惑星
    • a dark horse in the political world
  1. 惑星運動planetary motion
  1. 惑星間探測機an interplanetary probe
  1. 惑星軌道a planetary orbit
  1. 惑星状星雲a planetary nebula ((複 -lae, ~s))
  1. 惑星探査planetary exploration