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vacuum tube

n.
1.electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

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Word of the Day

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  • vacuum pump
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  • vacuum gauge
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  • vacuum gage
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  • vacuum flask
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  • vacuum cleaner
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  • vacuum chamber
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  • vacuum bottle
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  • vacuum bomb
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  • vacuum bag
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  • vacuum aspiration
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  • vacuum-clean
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  • vade mecum
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  • vaduz
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  • vagabond
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  • vagabondage
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  • vagal
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  • vagary
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  • vagile
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  • vagn walfrid ekman
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  • vagrancy
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  • stops
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  • oxidate
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  • newscaster
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  • bagpipe
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  • sunshine
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  • kerensky
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  • pretorial
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  • lapsed
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  • lifeboat
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  • observe
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    Idiom of the Day

    into thin air
    completely, without anything left
    The group of hikers vanished into thin air and were never heard from again.



    1.
    When a horse runs medium-fast, it

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