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Thermos™

noun
🔊/ˈθɜːməs/
🔊/ˈθɜːrməs/
(British English also Thermos flask)
(North American English also Thermos bottle)
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  1. a particular kind of vacuum flask膳魔师保温（或保冷）瓶；保温瓶 (= a container like a bottle with double walls with a vacuum between them, used for keeping liquids hot or cold) compare flask
    Oxford Collocations DictionaryThermos™ is used before these nouns:
    • bottle
    • flask
    See full entry
    Word Originearly 20th cent.: from Greek, literally ‘hot’.