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"Vacuum Flask" Definition
noun
See vacuum bottle.
Source: American Heritage Dictionary
A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents.
Source: Wiktionary
A dewar vessel is the scientific version, and is most often used to store liquified gases.
Source: Wiktionary
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.
Source: Wiktionary
Flask with double walls separated by vacuum; used to maintain substances at high or low temperatures.
Source: Wordnet
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