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extragalactic nebula

 
Noun extragalactic nebula has 1 sense
  1. galaxy, extragalactic nebula - (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "`extragalactic nebula' is a former name for `galaxy'"
    --1 is a kind of collection, aggregation, accumulation, assemblage
    --1 is a member of
     universe, existence, creation, world, cosmos, macrocosm
    --1 has members: star
    --1 has substances: cosmic dust
    --1 has particulars:
     spiral galaxy, spiral nebula; Great Attractor; Magellanic Cloud; Milky Way, Milky Way Galaxy, Milky Way System
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