Where does “Gegenströmung” come from?

Gegenströmung (German) comes from German Strömung, from German strömen, from German Strom, from Middle High German strūm, from Old High German stroum, from Proto-West Germanic straum, from Proto-Germanic straumaz, from Proto-Indo-European srowmos — to flow; to guard; to bind, to tie together.

Gegenströmung (German): crosscurrent

Definitions

  1. crosscurrent

Ancestry of “Gegenströmung”, step by step

Gegenströmung traces back through two separate lines of ancestry.

via German Strömung

StepLanguageWordMeaning
1GermanStrömungcurrent, stream, flux, flow
2GermanströmenTo flow, stream, pour
3GermanStroma large river; stream; current; electric current;...
4Middle High Germanstrūm
5Old High Germanstroum
6Proto-West Germanicstraumstream
7Proto-Germanicstraumazstream, current, river
8Proto-Indo-Europeansrowmosriver
9Proto-Indo-Europeansrew-to flow, stream
10Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together

via German gegen

StepLanguageWordMeaning
1Germangegenagainst
2Middle High Germangegenagainst
3Old High Germangaganagainst
4Proto-Germanicgagintowards, in the direction of; against
Every word from Proto-Indo-European ser-