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planetary nebula

n.
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

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Word of the Day

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  • planetary house
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  • planer
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  • planetesimal
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  • planetesimal hypothesis
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  • planetoid
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  • plangency
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  • plangent
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  • planimeter
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  • planing machine
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  • plank
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  • plank down
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  • plank over
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  • fixed
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  • subgenus chen
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  • family bangiaceae
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    Idiom of the Day

    on account
    on credit, partial payment of a debt or an invoice
    We buy many things on account at the local department store.



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    If someone has a skeleton in their closet, they have a secret about their past that they don't want people to know.

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