Etymology

octahydrate

O1C3T1A1H4Y4D2R1A1T1E1

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

English hydrate ← French hydrate ← Ancient Greek ὀκτᾰ- (oktă-)
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The story

  1. Proto-Indo-European*oḱtṓw
  2. Proto-Hellenic*oktṓ
  3. Ancient Greekὀκτώ (oktṓ)
  4. Ancient Greekὀκτᾰ- (oktă-)
  5. Englishocta-
  6. Frenchhydrate
  7. Englishhydrate
  8. English todayoctahydrate

From octa- + hydrate.

Etymology from Wiktionary, CC BY-SA 4.0.