Where does “trimethine” come from?

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

trimethine (English): The group -CH=CH-CH= present in some oxonols

Definitions

  1. The group -CH=CH-CH= present in some oxonols

Ancestry of “trimethine”, step by step

trimethine traces back through two separate lines of ancestry.

via English tri

StepLanguageWordMeaning
1Englishtritriathlon; triangle
2Proto-Indo-Europeantréyesthree

via English methine

StepLanguageWordMeaning
1EnglishmethineThe tervalent functional group, -CH=, having one...
Every word from Proto-Indo-European tréyes →Every word from English tri →