Etymograph

English

thermos

Thermos comes from Ancient Greek θερμός ‘warm’, and goes back to Proto-Indo-European *gʷʰer-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*gʷʰer-‘to be warm’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*gʷʰermosreconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*kʷʰermósreconstructed
  4. Ancient Greekc. 800–300 BCEθερμόςthermós‘warm’
  5. Englishtodaythermos

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*gʷʰer-‘to be warm’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*gʷʰermosreconstructed
  3. Proto-Hellenicc. 2200–1600 BCE*kʷʰermósreconstructed
  4. Ancient Greekc. 800–300 BCEθερμόςthermós‘warm’
  5. Englishtodaythermos

The story

Possibly related to English warm.

Linked words

through Proto-Indo-European *gʷʰer- ‘to be warm’

warm, gore, furnace, gory, forceps, garlick, 19 more

Another origin of thermos

  1. Ancient Greekc. 800–300 BCEθέρμος
  2. Englishtodaythermos

Today it means

noun A bottle, flask or similar vessel having a vacuum between its inner and outer silvered walls; designed to maintain the temperature of its contents

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *gʷʰer- / thermos

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