Where does “quarantine” come from?
quarantine (Italian) comes from Italian quarantina, from Italian quaranta, from Late Latin quarranta, from Latin quadrāgintā, from Proto-Indo-European kʷetwr̥̄ḱomt, from Proto-Indo-European kʷétwr̥dḱomt, from Proto-Indo-European kʷetwr̥-, from Proto-Indo-European kʷetwóres — and.
quarantine (Italian): plural of quarantina
Ancestry of “quarantine”, step by step