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Definition 2024

vacuum flask ‎(plural vacuum flasks)

Synonym of thermos
(chemistry) A Dewar vessel is the scientific version, and is most often used to store liquified gases.
(chemistry) 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. Also known as a Büchner flask.

a bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls — see thermos

chemistry: Dewar vessel — see dewar

chemistry: Filter flask — see Büchner flask