Vacuum-flask Definition

noun

A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents.

Wiktionary
(chemistry) A Dewar vessel is the scientific version, and is most often used to store liquified gases.
Wiktionary

(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.

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Other Word Forms of Vacuum-flask

Noun

Singular:
vacuum-flask
Plural:
vacuum-flasks

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