name · noun · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˈθɜː.mɒs/
Southern-England:Recorded audio is listed in the source snapshot.
Canada, General-American:/ˈθɝ.məs/
CMU ARPABET:TH ER1 M AH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
name
Meaning 1
The ancient capital and sanctuary in Aetolia, Greece.
Definition source: English Wiktionary via Wiktextract
Usage: historical
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: Thermon, Thermum
Antonyms: none provided
2
noun
Meaning 2
A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
A unit of measure whose identification remains very unclear.
Definition source: English Wiktionary via Wiktextract
Usage: historical
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
vacuum flask that preserves temperature of hot or cold drinks
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: thermos bottle, thermos flask
Antonyms: none provided
Broader terms: vacuum flask, vacuum bottle
History
Etymology
Transliteration of Ancient Greek Θέρμος (Thérmos).
Genericization of the trademark Thermos, from Ancient Greek θερμός (thermós, “warm”). Possibly related to English warm.
Borrowed from Ancient Greek θέρμος (thérmos).
Across languages
Translations
88 source translations are retained for this English entry.
Ancient Greek:
Θέρμος
(Thérmos)
— Ancient Greek sanctuary
Ancient Greek:
Θέρμον
(Thérmon)
— Ancient Greek sanctuary
Latin:
Thermum
— Ancient Greek sanctuary
Marathi:
थेर्मोस
(thermos)
— Ancient Greek sanctuary
Russian:
Ферм
(Ferm)
— Ancient Greek sanctuary
Russian:
Фермон
(Fermon)
— Ancient Greek sanctuary
