English

Noun

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”, talk.origins, 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”, talk.origins, Usenet

     Back in the 19-th century the asteroid Ceres was demoted from planetdom.