extragalactic nebula

Noun extragalactic nebula has 1 sense

• extragalactic nebula(n = noun.group) galaxy - (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'"
is a kind of accumulation, aggregation, assemblage, collection
has particulars: spiral galaxy, spiral nebula, great attractor, milky way, milky way galaxy, milky way system, magellanic cloud
is a member of cosmos, creation, existence, macrocosm, universe, world