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planetary nebula
 
Noun planetary nebula has 1 sense
  1. planetary nebula - a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star
    --1 is a kind of     nebula
planet wheel planeta planetal planetarium planetarium planetary planetary gear planetary house planetary nebula planetesimal planetesimal hypothesis planetoid planets planets rotation planey plangency plangene

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