Where does “Brechungsindex” come from?

Brechungsindex (German) comes from German Brechung, from German brëchen, from Middle High German brëchen, from Old High German brehhan, from Proto-West Germanic brekan, from Proto-Germanic brekaną, from Proto-Indo-European bʰrēǵ- — to shine, shimmer.

Brechungsindex (German): refractive index

Definitions

  1. refractive index

Ancestry of “Brechungsindex”, step by step

Brechungsindex traces back through two separate lines of ancestry.

via German Brechung

StepLanguageWordMeaning
1GermanBrechungrefraction; vowel breaking
2Germanbrëchento break
3Middle High Germanbrëchento break
4Old High Germanbrehhanto break
5Proto-West Germanicbrekanto break
6Proto-Germanicbrekanąto break
7Proto-Indo-Europeanbʰrēǵ-to shine, shimmer

via German Index

StepLanguageWordMeaning
1GermanIndexindex
Every word from Proto-Indo-European bʰrēǵ- →Every word from Proto-Germanic brekaną →Every word from Proto-West Germanic brekan →