Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A vacuum flask; a vessel which keeps its contents hotter or cooler than their environment without the need to modify the pressure, by interposing an evacuated region to provide thermal insulation between the contents and the environment.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From the name of inventor James Dewar

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