thermos
/ˈθɝ.məs/
UK: /ˈθɜː.mɒs/
Θɝ · məs (2 syllables)
English
Noun Top 21,788
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Definition
A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents
Etymology
Genericization of the trademark Thermos, from Ancient Greek θερμός (thermós, “warm”). Possibly related to English warm.
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