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Thermos definition

Ther·mos (t̸hʉr′məs)

a container, as a bottle, flask, or jug, for keeping liquids at almost their original temperature for several hours: it has two walls enclosing a vacuum and is fitted in a metal or plastic outer case

Etymology: < Gr thermos, hot, warm

noun

such a vessel

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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