dewar
UK/ˈdjuː.ə/US/ˈduː.ɚ/
dewar 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.
Noun (1)
dewar (plural dewars)
- 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.2009 February 17, Guy Gugliotta, “Perseverance Is Paying Off for a Test of Relativity in Space”, in New York Times
- 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
Proper noun capitalized: Dewar
UK/ˈdjuːwə(ɹ)/
Dewar (countable and uncountable, plural Dewars)
- A surname from Scottish Gaelic.
- An unincorporated community in Black Hawk County, Iowa, United States.
- A city in Okmulgee County, Oklahoma, United States.
Noun (2) capitalized: Dewar
UK/ˈdjuːwə(ɹ)/
Dewar (plural Dewars)
- 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 bottle, Dewar bulb, Dewar flask, Dewar vessel
dewar meaning in Tamil and Bengali
dewar in Tamil
- டூவர்
dewar in Bengali
- চ্যালেঞ্জ করেন, অমান্য করেন
Synonyms of dewar
- Dewar bulb
- Dewar flask
- Dewar tube
- Dewar vessel
- vacuum flask
- vacuum thermos
- vacuum thermos bottle
- vacuum thermos bulb
- vacuum thermos flask
- vacuum thermos vessel
1 more synonymsFewer synonyms
- Dewar bottle
Forms of dewar
| Noun | |
|---|---|
| plural | dewars |
| alternative form | Dewar |
| plural | Dewars |
| alternative form | dewar |
| Proper noun | |
| plural | Dewars |
Origin of dewar
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.
Words formed from dewar
- Dewar bottle
- Dewar bulb
- Dewar flask
- Dewar vessel
Phrases with dewar
Questions about dewar
- What does dewar mean?
- Dewar means 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.
- What is dewar in Tamil?
- Dewar in Tamil is டூவர். See Dewar meaning in Tamil.
- What part of speech is dewar?
- Dewar can be a noun or a proper noun.
- How do you pronounce dewar?
- Dewar is pronounced /ˈdjuː.ə/ (UK).
- What is the plural of dewar?
- The plural of dewar is dewars.
Words near dewar in the dictionary
Source and license
Adapted from Wiktionary: dewar (page history and authors); Dewar (page history and authors); Dewar (Tamil Wiktionary) (page history and authors); Dewar (Bengali Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Cite this entry: “dewar.” Word.ws, https://word.ws/dewar. Based on Wiktionary, CC BY-SA 4.0.