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vacuum flask

DEFINITIONS OF: vacuum flask

1

n flask with double walls separated by vacuum; used to maintain substances at high or low temperatures

Synonyms:
vacuum bottle
Types:
Dewar, Dewar flask
vacuum flask that holds liquid air or helium for scientific experiments
thermos, thermos bottle, thermos flask
vacuum flask that preserves temperature of hot or cold drinks
Type of:
flask
bottle that has a narrow neck
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