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thermos

[ thur-muhs ]
/ ˈθɜr məs /
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Definition of thermos

noun
a vacuum bottle or similar container lined with an insulating material, such as polystyrene, to keep liquids hot or cold.
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Also called thermos bottle.

Origin of thermos

First recorded in 1905–10; formerly a trademark
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use thermos in a sentence

British Dictionary definitions for thermos

Thermos

Thermos flask

/ (ˈθɜːməs) /

noun
trademark a type of stoppered vacuum flask used to preserve the temperature of its contentsSee also Dewar flask
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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