Etymology

octa-

Today it means: Eight. Full definition →

Ancient Greek ὀκτᾰ- (oktă-) ← Proto-Hellenic *oktṓ ← Proto-Indo-European *oḱtṓw
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The story

  1. Proto-Indo-European*oḱtṓw
  2. Proto-Hellenic*oktṓ
  3. Ancient Greekὀκτώ (oktṓ)
  4. Ancient Greekὀκτᾰ- (oktă-)
  5. English todayocta-

From Ancient Greek ὀκτα- (okta-, “eight”); compare ὀκτώ (oktṓ).

Etymology from Wiktionary, CC BY-SA 4.0.