Etymology

dewar

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Today it means: A glass or metal double-walled flask for holding a liquid without much loss or gain of heat; a vacuum bottle or thermos. Generally used for scientific purposes and in particular for cryogenic work. Full definition →

Scottish Gaelic deòradh
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dewar · noun1

Named after British physicist and chemist James Dewar, its inventor.

Dewar · proper noun, noun2

  1. Scottish Gaelic · derived fromdeòradh“pilgrim, stranger”
  2. English todayDewar

From Scottish Gaelic deòradh (“pilgrim, stranger”), an occupational surname for a custodian of holy relics. It could also be an habitational surname, from Dewar, Scottish Borders. The flask is named for James Dewar, who is credited with its invention.

Etymology from Wiktionary, CC BY-SA 4.0.