Etymology

pentahydrate

P3E1N1T1A1H4Y4D2R1A1T1E1

Today it means: A hydrate whose solid contains five molecules of water of crystallization per molecule, or per unit cell. Full definition →

English hydrate ← French hydrate ← Ancient Greek ὑδρο- (hudro-)
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Proto-Indo-European*pénkʷe
  2. Proto-Hellenic*pénkʷe
  3. Ancient Greekπέντε (pénte)
  4. Ancient Greekπεντᾰ- (pentă-)
  5. Englishpenta-
  6. Proto-Indo-European*wed-
  7. Proto-Indo-European*wódr̥
  8. Proto-Hellenic*údōr
  9. Ancient Greekῡ̆̔́δωρ (hū̆́dōr)
  10. Ancient Greekὑδρο- (hudro-)
  11. Frenchhydr-
  12. Frenchhydrate
  13. Englishhydrate
  14. English todaypentahydrate

From penta- + hydrate.

Etymology from Wiktionary, CC BY-SA 4.0.