Where does “40-gon” come from?

40-gon (English) comes from English gon, from Ancient Greek γωνία, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.

40-gon (English): A 40-sided polygon

Definitions

  1. A 40-sided polygon

Ancestry of “40-gon”, step by step

40-gon traces back through two separate lines of ancestry.

via English gon

StepLanguageWordMeaning
1EnglishgonOne hundredth of a right angle; a gradian;...
2Ancient Greekγωνίαcorner, angle; joiner's square; cornerstone
3Ancient Greekγόνυknee
4Proto-Hellenicgónuknee
5Proto-Indo-Europeanǵónuknee

via English 40

StepLanguageWordMeaning
1English40A bottle containing 40 fluid ounces of malt...
Every word from Proto-Indo-European ǵónu