Where does “wallcrossing” come from?

wallcrossing (English) comes from English Wall, from Middle English wall, from Old English weall, from Proto-Germanic wallaz, from Latin vallum, from Proto-Indo-European wēl- — to see, perceive.

wallcrossing (English): A discontinuous change across a codimension wall...

Definitions

  1. A discontinuous change across a codimension wall...

Ancestry of “wallcrossing”, step by step

wallcrossing traces back through two separate lines of ancestry.

via English Wall

StepLanguageWordMeaning
1EnglishWallThe Berlin Wall
2Middle EnglishwallAlternative form of wale
3Old Englishweallwall; fervour; uproar; boiled or mulled wine
4Proto-Germanicwallazwell, spring; wall, rampart, entrenchment
5Latinvallumwall, rampart, entrenchment
6Proto-Indo-Europeanwēl-to see, perceive

via English crossing

StepLanguageWordMeaning
1EnglishcrossingAn intersection where roads, lines, or tracks...
Every word from Proto-Indo-European wēl-Every word from Latin vallumEvery word from Proto-Germanic wallaz
wallcrossing — Etymology, Origin & Word History | Etymology Explorer