Etymology

-gon

Today it means: Forms the names of plane figures containing a given number of internal angles, and thus bounded by that number of line segments (polygons). Full definition →

Ancient Greek γωνία ← Proto-Indo-European *ǵónu
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The story

  1. Proto-Indo-European · derived from*ǵónu“knee”
  2. Ancient Greek · borrowed fromγωνία“corner, angle”
  3. English today-gon

From Ancient Greek γωνία (gōnía, “corner, angle”), from Proto-Indo-European *ǵónu (“knee”).

Words from the same roots

Ancient Greekγωνία all →

gongonio-goniorhynchidhexacontagonOrthogonian

Proto-Indo-European*ǵónu all →

genoaoctagon

Etymology from Wiktionary, CC BY-SA 4.0.