Where does “enneadecagon” come from?

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

enneadecagon (English): A polygon with nineteen sides and nineteen angles

Definitions

  1. A polygon with nineteen sides and nineteen angles

Ancestry of “enneadecagon”, step by step

enneadecagon 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 enneadeca

StepLanguageWordMeaning
1Englishenneadeca
Every word from Proto-Indo-European ǵónu