Where does “quadruple” come from?

quadruple (Latin) comes from Latin quadruplus, 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.

quadruple (Latin): vocative masculine singular of quadruplus

Definitions

  1. vocative masculine singular of quadruplus

Ancestry of “quadruple”, step by step

StepLanguageWordMeaning
1Latinquadruplusfourfold, quadruple
2Latinquattŭorfour; 4
3Portuguesequartoordinal form of quatro; fourth; quarter; fourth;...
4Old Portuguesequartoquarter
5Latinquārtusfourth
6Proto-Indo-Europeankʷeturtos—
7Proto-Indo-Europeankʷetwóresfour
8Proto-Indo-Europeankʷe-and
Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Proto-Indo-European kʷeturtos →