Where does “ไอซ์แลนด์” come from?

ไอซ์แลนด์ (Thai) comes from English Iceland, from English ice, from Middle English is, from Old English īs, from Proto-West Germanic īs, from Proto-Germanic īsą, from Proto-Indo-European h₁eyH- — ice, frost.

Ancestry of “ไอซ์แลนด์”, step by step

StepLanguageWordMeaning
1EnglishIcelandA land or region of icy terrain
2EnglishiceWater in frozen form; Any frozen volatile...
3Middle Englishisice; That which is short-lived like ice; icy...
4Old Englishīsice
5Proto-West Germanicīsice
6Proto-Germanicīsąice
7Proto-Indo-Europeanh₁eyH-ice, frost
Every word from Proto-Indo-European h₁eyH- →Every word from Proto-Germanic īsą →Every word from Proto-West Germanic īs →