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Planetary Nebula
Definition of Planetary Nebula
1.
A nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star
Noun
Semanticaly linked words with "planetary nebula"
nebula
Hyponims for word "planetary nebula"
nebula