Where does “Westzaan” come from?

Westzaan (Dutch) comes from Dutch zaan, from Middle Dutch saen, from Old Dutch sān, from Proto-West Germanic sān(ō), from Proto-Germanic sēna, from Proto-Germanic *sa, from Proto-Austronesian *əsa, from Proto-Oceanic *isa.

Ancestry of “Westzaan”, step by step

Westzaan traces back through two separate lines of ancestry.

via Dutch zaan

StepLanguageWordMeaning
1Dutchzaansoon; cream
2Middle Dutchsaenquickly, soon; immediately, right away; suddenly,...
3Old Dutchsān—
4Proto-West Germanicsān(ō)immediately
5Proto-Germanicsēna—
6Proto-Germanic*sa—
7Proto-Austronesian*əsa—
8Proto-Oceanic*isa—

via Dutch west

StepLanguageWordMeaning
1Dutchwestwest; westwards
2Middle Dutchwest—
3Old Dutchwest—
4Proto-Germanicwestrąwest; west, westward
5Proto-Germanicwestrazwest, western
6Proto-Indo-Europeanwek(ʷ)sperosevening
7Proto-Indo-Europeanwe-—
Every word from Proto-Oceanic *isa →Every word from Proto-Austronesian *əsa →Every word from Proto-Germanic *sa →