Where does “isonymy” come from?

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

isonymy (English): The property of having the same name, especially...

Definitions

  1. The property of having the same name, especially...

Ancestry of “isonymy”, step by step

StepLanguageWordMeaning
1EnglishISInitialism of International Sign; Initialism of...
2Middle Englishisice; That which is short-lived like ice; icy...
3Old Englishīsice
4Proto-West Germanicīsice
5Proto-Germanicīsąice
6Proto-Indo-Europeanh₁eyH-ice, frost
Every word from Proto-Indo-European h₁eyH- →Every word from Proto-Germanic īsą →Every word from Proto-West Germanic īs →