vacuum bottle

noun
a bottle or flask having a vacuum liner that prevents the escape of heat from hot contents, usually liquids, or the entrance of heat into cold contents; thermos.

Origin:
1905–10

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
vacuum bottle  
A container with a double wall and a partial vacuum in the space between the two walls. Vacuum bottles are used to minimize the transfer of heat between the inside and the outside and thus keep the contents at a desired temperature.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Aspiration of air through a catheter to a vacuum bottle may re-expand the lung.
Provide bracket and plastic vacuum bottle holder for each vacuum wall inlet.
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