Etymology

octree

O1C3T1R1E1E1

Today it means: A treelike data structure each of whose nodes has up to eight children, most often used to partition a three-dimensional space by recursively subdividing it. Full definition →

English tree ← Middle English tre ← Old English trēow
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The story

  1. Englishoct-
  2. Proto-Indo-European*dóru
  3. Proto-Germanic*trewą
  4. Proto-West Germanic*treu
  5. Old Englishtrēow
  6. Middle Englishtre
  7. Englishtree
  8. English todayoctree

From oct- + tree.

Etymology from Wiktionary, CC BY-SA 4.0.