Where does “quartāna” come from?

quartāna (Latin) comes from Latin quartānus, from Latin quārtus, from Proto-Indo-European kʷeturtos, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

Ancestry of “quartāna”, step by step

StepLanguageWordMeaning
1Latinquartānusfourth e.g. on the fourth day, of the fourth legion etc
2Latinquārtusfourth
3Proto-Indo-Europeankʷeturtos—
4Proto-Indo-Europeankʷetwóresfour
5Proto-Indo-Europeankʷe-and

Words derived from “quartāna”

Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Proto-Indo-European kʷeturtos →