Where does “quadruplans” come from?
quadruplans (Latin) comes from Latin quadruplo, 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 — and.
Ancestry of “quadruplans”, step by step