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planet +‎ -dom


planetdom (uncountable)

  1. (neologism) Those things that are planets; the state of being a planet.
    • 1873, Enoch Fitch Burr, Pater Mundi: Or, Doctrine of Evolution., Holmes Noyes, pages 233-234
      One day our System in its progress through space neared these lost Children of the Mist.... [S]uch incorrigible vagrants, were enough to corrupt the habits of the staidest young family in Planetdom
    • 2006 August 25, Ira Flatow, “Pluto”, Science Friday, National Public Radio
      ...yesterday, its members voted to drop Pluto from the ranks of planetdom.
    • 2006 August 26, Wendel Fendel, “Re: Pluto's a dwarf”,, Usenet
      What did the Chisters say when Ceres was demoted from planetdom back in the 19th century?
    • 2006 August 29, Manny Feld, “Re: solar system”,, Usenet
      Back in the 19-th century the asteroid Ceres was demoted from planetdom.