Where does “pentahex” come from?

pentahex (English) comes from English hex, from English hexagon, from Latin hexagōnum, from Ancient Greek ἑξάγωνον, from Ancient Greek ἑξα-, from Ancient Greek ἕξ, from Proto-Hellenic hwéks, from Proto-Indo-European swéḱs — six.

pentahex (English): A polyhex composed of five hexagons

Definitions

  1. A polyhex composed of five hexagons

Ancestry of “pentahex”, step by step

pentahex traces back through two separate lines of ancestry.

via English hex

StepLanguageWordMeaning
1EnglishhexTo cast a spell on (specifically an evil spell), to bewitch
2EnglishhexagonA polygon with six sides and six angles
3Latinhexagōnumhexagon
4Ancient Greekἑξάγωνονhexagon
5Ancient Greekἑξα-Forming compound words with the sense of "six"
6Ancient Greekἕξsix
7Proto-Hellenichwékscardinal...
8Proto-Indo-Europeanswéḱssix

via English penta

StepLanguageWordMeaning
1Englishpenta
Every word from Proto-Indo-European swéḱsEvery word from Ancient Greek ἑξα-Every word from Ancient Greek ἑξάγωνον