extragalactic nebula

extragalactic nebula
(formerly) galaxy (def. 1a).

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Universalium. 2010.

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  • spiral nebula — noun a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center • Syn: ↑spiral galaxy • Hypernyms: ↑galaxy, ↑extragalactic nebula • Hyponyms: ↑Andromeda galaxy * * * …   Useful english dictionary

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