SPIRAL NEBULA

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center

Synonyms:

spiral galaxy; spiral nebula

Classified under:

Nouns denoting groupings of people or objects

Hypernyms ("spiral nebula" is a kind of...):

extragalactic nebula; galaxy ((astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust)

Hyponyms (each of the following is a kind of "spiral nebula"):

Andromeda galaxy (a spiral galaxy in the constellation of Andromeda that is visible to the naked eye)

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