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Placidus meaning and name origin
Placidus \p-laci-dus, pl(a)-cidus\ as a boy's name is a variant of Placido (Spanish), and the meaning of Placidus is "clam, serene".
The baby name Placidus sounds like Placydo, Placyd and Placedo.
Popularity of Placidus
Placidus is not a popular first name for men and an equally uncommon surname or last name for all people. (1990 U.S. Census)
Displayed below is the baby names popularity of the name Placidus for boys. (2010 statistics) Compare Placidus with its source form and related boy baby names.