Where does “superwindow” come from?

superwindow (English) comes from English super, from English super-ego, from German Über-Ich, from German Ich, from Middle High German ich, from Old High German ih, from Proto-West Germanic ik, from Proto-Germanic *ek — I.

superwindow (English): A highly insulated window incorporating multiple...

Definitions

  1. A highly insulated window incorporating multiple...

Ancestry of “superwindow”, step by step

superwindow traces back through two separate lines of ancestry.

via English super

StepLanguageWordMeaning
1EnglishsuperOf excellent quality, superfine; better than...
2Englishsuper-egoAlternative spelling of superego
3GermanÜber-Ichsuperego
4GermanIchego, the Ich; self, me, him, etc
5Middle High GermanichI
6Old High GermanihI
7Proto-West GermanicikI
8Proto-Germanic*ek
9Proto-Indo-Europeanéǵh₂I

via English window

StepLanguageWordMeaning
1EnglishwindowAn opening, usually covered by one or more panes...
2Middle Englishwindowe
3Old Norsevindaugawindow
4Old Norsevindrwind; awry; second/third-person singular present...
5Proto-Germanicwindazwind
6Proto-Indo-Europeanh₂wéh₁n̥tsblowing; that which blows; the wind, air
7Proto-Indo-Europeanh₂wḗh₁tito blow
8Proto-Indo-Europeanh₂weh₁-to blow
Every word from Proto-Indo-European éǵh₂