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planer
planer tree
planet
planet wheel
planetar
planetarium
planetary
planetary gear
planetary nebula
planetesimal
planetoid
planetology
planetwide
plangent
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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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