Where does “quadri-” come from?

quadri- (English) comes from Latin quattŭor, from Portuguese quarto, from Old Portuguese quarto, from Latin quārtus, from Proto-Indo-European kʷeturtos, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

quadri- (English): API; Four

Definitions

  1. API; Four

Ancestry of “quadri-”, step by step

StepLanguageWordMeaning
1Latinquattŭorfour; 4
2Portuguesequartoordinal form of quatro; fourth; quarter; fourth;...
3Old Portuguesequartoquarter
4Latinquārtusfourth
5Proto-Indo-Europeankʷeturtos—
6Proto-Indo-Europeankʷetwóresfour
7Proto-Indo-Europeankʷe-and

Words derived from “quadri-”

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