planetary

/ˈplænətri/ (bre, ipa) · /ˈplænəteri/ (ame, ipa) · /ˈpla-nə-ˌter-ē/ (ame, mw)

planetary — adjective

  • planetarypositive
  • more planetarycomparative
  • most planetarysuperlative

1. connected with planets, or showing the kind of look or movement a planet has in

1.形容詞C1
釋義

connected with planets, or showing the kind of look or movement a planet has in space.

例句

The museum opened a planetary gallery with rocks from Mars and the Moon.

planetary + noun in science contexts

Dr. Kumar studies planetary motion with students on the school roof.

collocation: planetary motion

同義詞
  • astronomical

    broader; it can describe stars, galaxies, and space study in general

  • orbital

    narrower; it mainly focuses on paths or movement around another body

  • cosmic

    broader and often less technical or more dramatic in tone

  • interplanetary

    specifically about travel or space between planets

反義詞
  • terrestrial

    relating to Earth or land rather than planets in space

文法句型

planetary + noun

planetary motion / science / system

用法筆記

Usually comes before nouns such as 'science', 'motion', 'surface', 'mission', and 'system'. In technical writing, it can also describe movement that follows the pattern of a planet's path around a star.

常見錯誤

❌We learned about planet science today.
✅We learned about planetary science today.
💡use the adjective before a science noun, not the noun 'planet' alone.
❌The probe sent back planet images.
✅The probe sent back planetary images.
💡before nouns like 'images' or 'surface', English usually uses the adjective 'planetary'.