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octagon

a geometric shape with eight sides and eight angles

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Where does the word "octagon" come from? It comes from Greek okto, and was adopted directly into English (1650s).

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Where does the word "octagon" come from? It comes from Greek okto, and was adopted directly into English (1650s).

Octagon’s story begins in Greek: okto meant “eight.” Eight, combined with gonia (angle). It reached English by 1650s as octagon. Settled as the geometric word for an eight-sided shape. Today, octagon means a geometric shape with eight sides and eight angles.

  1. Stage 1 · Greek · ancient okto "eight", eight, combined with gonia (angle).
  2. Stage 2 · English · 1650s octagon "an eight-sided geometric shape", settled as the geometric word for an eight-sided shape.

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