Where does “pentatriene” come from?

pentatriene (English) comes from English triene, from English tri, from Proto-Indo-European tréyes — three.

pentatriene (English): Any of several isomeric unsaturated aliphatic...

Definitions

  1. Any of several isomeric unsaturated aliphatic...

Ancestry of “pentatriene”, step by step

pentatriene traces back through two separate lines of ancestry.

via English triene

StepLanguageWordMeaning
1EnglishtrieneAny alkene that has three double bonds
2Englishtritriathlon; triangle
3Proto-Indo-Europeantréyesthree

via English penta

StepLanguageWordMeaning
1Englishpenta
Every word from Proto-Indo-European tréyes