/ˈdjuːwə(ɹ)/
OriginFrom Scottish Gaelic deoradh (“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.
- countable, uncountableA surname from Scottish Gaelic.
- countable, uncountableAn unincorporated community in Black Hawk County, Iowa, United States.
- countable, uncountableA city in Okmulgee County, Oklahoma, United States.
- 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.
- 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.
“A large thermos-like container called a dewar contained 645 gallons of liquid helium to be cooled to within two degrees of absolute zero.”
FormsDewars(plural) · dewar(alternative) · dewars(plural) · Dewar(alternative)