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Vacuum flask

noun

Definitions

Noun
  1. 1
    A Dewar vessel, a scientific instrument used to store liquified gases.
  2. 2
    flask with double walls separated by vacuum; used to maintain substances at high or low temperatures wordnet
  3. 3
    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.
  4. 4
    Synonym of thermos.

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