vacuum flask
noun1
Chemistry, Natural sciences, Physical sciences A Dewar vessel, a scientific instrument used to store liquified gases.
2
Chemistry, Natural sciences, Physical sciences A type of glass flask used in a laboratory similar to an Erlenmeyer flask, but with a side spout used for connection to an aspirator.
3
Synonym of thermos.
- Synonyms
- Büchner flask, Dewar flask, Dewar vessel, vacuum bottle