Where does “nth” come from?

nth (English) comes from English -th, from Middle English -eth, from Old English -eþ, from Proto-Germanic -þi, from Proto-Indo-European -ti.

nth (English): Occurring at position "n" in a sequence;...

Definitions

  1. Occurring at position "n" in a sequence;...

Ancestry of “nth”, step by step

StepLanguageWordMeaning
1English-thUsed to form nouns from verbs of action; Used to...
2Middle English-ethUsed to form the third-person singular present...
3Old English-eþThird person singular present indicative ending of class 1 weak verbs
4Proto-Germanic-þi
5Proto-Indo-European-ti
Every word from Proto-Indo-European -ti