dewar
UK /ˈdjuː.ə/ · US /ˈduː.ɚ/ noun, proper noun
Forms dewars
- 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.
- proper noun A surname from Scottish Gaelic.
- proper noun An unincorporated community in Black Hawk County, Iowa, United States.
- proper noun A city in Okmulgee County, Oklahoma, United States.
- noun 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.
Synonyms
Dewar bulb Dewar flask Dewar tube Dewar vessel vacuum flask vacuum thermos vacuum thermos bottle vacuum thermos bulb vacuum thermos flask vacuum thermos vessel Dewar bottle Sir James Dewar
Etymology
Named after British physicist and chemist James Dewar, its inventor.
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.
Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “dewar”, CC BY-SA 4.0. Details