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planetary nebula
plan·e·tar·y neb·u·la
(
plural
plan·e·tar·y neb·u·lae
or
plan·e·tar·y neb·u·las
)
noun
Definition:
glowing ring-shaped nebula:
a glowing ring-shaped nebula of expanding gases surrounding a small, very hot white star
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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