noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   plural of thermos (“unit of measure”) form-of, plural
2. 2
   plural of thermos (“flask”) form-of, plural, rare

   "After lunch Arthur and I set off with baskets of food and thermoi."

Synonyms

All synonyms

thermos flaskdewar flaskthermal flaskthermoflaskthermonthermos bottle

Example

More examples

"After lunch Arthur and I set off with baskets of food and thermoi."

Etymology

Etymology 1

From Ancient Greek θέρμοι (thérmoi).

Etymology 2

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

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.