Dewar-flask meaning

do͝oər, dyo͝o-
An insulated container used especially to store liquefied gases, having a double wall with a vacuum between the walls and silvered surfaces facing the vacuum.
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A double-walled flask with a vacuum between the walls, which are silvered on the inside, used esp. for storage of liquefied gases.
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Origin of dewar-flask

  • After Sir James Dewar (1842–1923), British chemist and physicist who invented it

    From American Heritage Dictionary of the English Language, 5th Edition