Where does “enneagonal” come from?

enneagonal (English) comes from English AL, from Dutch al, from Middle Dutch al, from Old Dutch āl, from Proto-West Germanic all, from Proto-Germanic allaz, from Proto-Indo-European h₂él- — to grow, nourish.

enneagonal (English): In the form of an enneagon; having nine angles

Definitions

  1. In the form of an enneagon; having nine angles

Ancestry of “enneagonal”, step by step

enneagonal traces back through two separate lines of ancestry.

via English AL

StepLanguageWordMeaning
1EnglishALInitialism of assembly language; Initialism of...
2Dutchalall, all of; already; yet
3Middle Dutchalall, all of; completely; even though, no matter...
4Old Dutchāl—
5Proto-West Germanicallall
6Proto-Germanicallazall
7Proto-Indo-Europeanh₂él-to grow, nourish

via English enneagon

StepLanguageWordMeaning
1EnglishenneagonA polygon with nine sides; a nonagon
2EnglishgonOne hundredth of a right angle; a gradian;...
3Ancient Greekγωνίαcorner, angle; joiner's square; cornerstone
4Ancient Greekγόνυknee
5Proto-Hellenicgónuknee
6Proto-Indo-Europeanǵónuknee
Every word from Proto-Indo-European h₂él- →Every word from Proto-Germanic allaz →Every word from Proto-West Germanic all →