Where does “quadrangolare” come from?
quadrangolare (Italian) comes from Italian quadr-, 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.
quadrangolare (Italian): quadrangular
Ancestry of “quadrangolare”, step by step