Meanings
nounDewar flask (plural Dewar flasks)
plural Dewar flasks
- A type of double-walled vacuum flask with silver lining.
Synonyms: Dewar vessel
Synonyms & antonyms
nounA type of double-walled vacuum flask with silver lining.
Similar
More synonyms by meaning
nounvacuum flask that holds liquid air or helium for scientific experiments
Similar
Broader
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
Named after James Dewar.
Full word history & related roots →Cite this entry
APA
Dewar flask. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Dewar%20flask
MLA
“Dewar flask.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Dewar%20flask. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Dewar flask,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Dewar%20flask.
Source: Dewar flask on Wiktionary, CC BY-SA 4.0.