Where does “quadrivariate” come from?
quadrivariate (English) comes from English quadri-, 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.
quadrivariate (English): Having four variables
Ancestry of “quadrivariate”, step by step