thermos.
A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents
Meaning & usage
A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents
Where this word comes from
Genericization of the trademark Thermos, from Ancient Greek θερμός (thermós, “warm”). Possibly related to English warm.
A unit of measure whose identification remains very unclear.
Where this word comes from
Borrowed from Ancient Greek θέρμος (thérmos).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.