noun
Dewar
DYOO-wuh
Dewar (noun) means a double-walled flask, similar to a thermos, used to keep liquids at a stable temperature, especially in scientific and cryogenic work. Example: “The liquid nitrogen was stored in a dewar to keep it from evaporating.”
noun
1
A double-walled flask, similar to a thermos, used to keep liquids at a stable temperature, especially in scientific and cryogenic work.
"The liquid nitrogen was stored in a dewar to keep it from evaporating."
How to use Dewar
Learner’s notesIn plain EnglishA specialised insulated flask used in labs to store very cold or very hot liquids.
Common pairings
a dewar flask
store in a dewar
Vocabulary Flow
Build your vocabulary from words like Dewar.
Vocabulary Flow serves the next word, and the next — meaning, pronunciation and an example each time. Practice at your level, or learn English in your own language.
Start vocabulary practice
Word forms
- Plural
- Dewars
Fill the gap
Can you complete this real example?
The liquid nitrogen was stored in a _____ to keep it from evaporating.
Etymology
Named after the Scottish scientist James Dewar, who is credited with inventing the vacuum flask.
Frequently asked questions
What does “Dewar” mean?
The word “Dewar” means a double-walled flask, similar to a thermos, used to keep liquids at a stable temperature, especially in scientific and cryogenic work. In plain terms, a specialised insulated flask used in labs to store very cold or very hot liquids.
How do you pronounce “Dewar”?
“Dewar” is pronounced DYOO-wuh (/ˈdjuːwə(ɹ)/ in IPA).
How do you use “Dewar” in a sentence?
Here is “Dewar” used in a sentence: “The liquid nitrogen was stored in a dewar to keep it from evaporating.”
What part of speech is “Dewar”?
“Dewar” is a noun.
