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vacuum bottle

American  

noun

  1. 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.

vacuum bottle Scientific  

  1. 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.

Etymology

Origin of vacuum bottle

First recorded in 1905–10

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.