Etymology

exothermal

E1X8O1T1H4E1R1M3A1L1

Today it means: exothermic Full definition →

English thermal ← Ancient Greek ἔξω (éxō) ← Proto-Hellenic *eks
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Proto-Indo-European*h₁éǵʰ
  2. Proto-Indo-European*h₁eǵʰs
  3. Proto-Hellenic*eks
  4. Ancient Greekἐκ (ek)
  5. Ancient Greekἔξω (éxō)
  6. Englishexo-
  7. Englishthermal
  8. English todayexothermal

From exo- + thermal.

Etymology from Wiktionary, CC BY-SA 4.0.