Word.ws English Dictionary

thermoi

thermoi is the plural of thermos.

Meaning of thermos

Noun (1)

thermos (plural thermoses or (rare) thermoi)

  1. A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents
    Synonyms:
    thermal flask, thermos flask, vacuum flask

Noun (2)

thermos (plural thermoi)

  1. (historical) A unit of measure whose identification remains very unclear.
    • The mnaeion contains 4 gold pieces, 16 quarters, 64 thermoi, 128 carats. The gold piece contains 4 staters [sic for quarters], 16 thermoi, 32 carats. The thermos contains 2 carats. The quarter contains 4 thermoi, 8 carats. The thermos contains 2 carats.[…]The mnaeion has sixteen (16) quarters and...1982, “Metrology (3455–3460)”, in A[dam] Bülow-Jacobsen, J[ohn] E[dwin] G[eorge] Whitehorne, editors, The Oxyrhynchus Papyri (Graeco-Roman Memoirs; No. 69), volume XLIX, […] for the British Academy...

See all 3 meanings of thermos

Origin of thermoi

From Ancient Greek θέρμοι (thérmoi).

Equivalent to Ancient Greek θερμοί (thermoí), plural of θερμός (thermós, “warm”).

Questions about thermoi

What is thermoi the plural of?
Thermoi is the plural of thermos.

Words near thermoi in the dictionary

  1. thermohygrometer
  2. thermohygrometers
  3. thermohygrometric
  4. thermohygroreceptor
  5. thermohygrosensitive
  6. thermoi
  7. thermoinactivate
  8. thermoinactivated
  9. thermoinactivation
  10. thermoinactivations
  11. thermoinducibility

Source and license

Adapted from Wiktionary: thermoi (page history and authors); thermos (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “thermoi.” Word.ws, https://word.ws/thermoi. Based on Wiktionary, CC BY-SA 4.0.