pentahydrate

P3E1N1T1A1H4Y4D2R1A1T1E1

noun

A hydrate whose solid contains five molecules of water of crystallization per molecule, or per unit cell.

OriginEnglish hydrate ← French hydrate ← Ancient Greek ὑδρο- (hudro-) →
Scrabble 21
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Meanings

nounpentahydrate (plural pentahydrates)

plural pentahydrates

  1. chemistryA hydrate whose solid contains five molecules of water of crystallization per molecule, or per unit cell.

Origin

  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. Englishpentahydrate

From penta- + hydrate.

Full word history & related roots →
Cite this entry
APA

pentahydrate. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/pentahydrate

MLA

“pentahydrate.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pentahydrate. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “pentahydrate,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/pentahydrate.

Source: pentahydrate on Wiktionary, CC BY-SA 4.0.