dewar definition

  • noun:
    • A vacuum flask; a vessel which keeps its items hotter or cooler than their particular environment without the necessity to modify the pressure, by interposing an evacuated area to provide thermal insulation involving the items and also the environment.
    • A vacuum flask; a vessel which keeps its contents hotter or cooler than their environment without the necessity to modify pressure, by interposing an evacuated area to supply thermal insulation amongst the articles as well as the environment.

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