Where does “Σκανδιναβός” come from?

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

Ancestry of “Σκανδιναβός”, step by step

StepLanguageWordMeaning
1GreekΣκανδιναβία
2LatinScandināviaa large and fertile island in Northern Europe, perhaps Zealand or Scania
3Proto-Germanic*SkadinawjōScania
4Proto-Germanicawjōfloodplain; meadow; island
5Proto-Germanicagwjō
6Proto-Indo-Europeanh₂ékʷeh₂water
Every word from Proto-Indo-European h₂ékʷeh₂Every word from Proto-Germanic agwjōEvery word from Proto-Germanic awjō