55%RatingSave Gender Masculine Usage Italian Pronounced Pron. PLA-chee-do [key·IPA] Meaning & History Italian form of the Late Latin name Placidus meaning "quiet, calm". Saint Placidus was a 6th-century Italian saint, a disciple of Saint Benedict. Related NamesFamily Tree·Details Other Languages & CulturesPlacid(English) Placide(French) Placidus(Late Roman) Plácido(Portuguese) Plácido(Spanish) Same SpellingPlácido PopularityDetails Last ranked #346 in 1960 Spain (by decade) Name DaysName Days? Italy: October 5 Categories Baccano characters, calm, calmness, Muppets, quiet, virtues