Thermos Definition
 thûrməs 
  thermoses
  
    noun
  
 
    thermoses
  
Such a vessel.
 Webster's New World 
A vacuum bottle used to keep beverages hot or cold.
 American Heritage 
Synonyms: 
  - thermos flask
 - thermos bottle
 
Other Word Forms of Thermos
Noun
Singular:
 thermosPlural:
 thermosesOrigin of Thermos
From Thermos, a trademarked name, from Ancient Greek θερμός (thermos, “warm")
From Wiktionary
Originally a trademark
From American Heritage Dictionary of the English Language, 5th Edition
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