Where does “Escandinavia” come from?

Escandinavia (Spanish) comes from Latin Scandināvia, from Proto-Germanic *Skadinawjō, from Proto-Germanic awjō, from Proto-Germanic agwjō, from Proto-Indo-European h₂ékʷeh₂ — water.

Ancestry of “Escandinavia”, step by step

StepLanguageWordMeaning
1LatinScandināviaa large and fertile island in Northern Europe, perhaps Zealand or Scania
2Proto-Germanic*SkadinawjōScania
3Proto-Germanicawjōfloodplain; meadow; island
4Proto-Germanicagwjō
5Proto-Indo-Europeanh₂ékʷeh₂water
Every word from Proto-Indo-European h₂ékʷeh₂Every word from Proto-Germanic agwjōEvery word from Proto-Germanic awjō