English

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Etymology

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planet +‎ -ary

Pronunciation

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Adjective

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planetary (not comparable)

  1. (astronomy) Of, or relating to planets, or the orbital motion of planets.
    • 1655, Thomas Fuller, The Church-history of Britain; [], London: [] Iohn Williams [], →OCLC:
      erratical and planetary life
  2. Of, or relating to the Earth; terrestrial.
  3. Of, or relating to the whole Earth; global.
    Synonym: global
  4. (of a gear train) epicyclic
    Synonym: epicyclic

Derived terms

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Translations

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Noun

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planetary (plural planetaries)

  1. A planetary nebula.