Vicarius's a Latin word, meaning substitute or deputy. It's the root and origin of the English word "vicar" and cognate to the Persian word most familiar in the variant vizier. Originally, in ancient Rome, this was an equivalent to the English "vice-" (as in "deputy"), used as part of the title of various officials. Each vicarius was assigned to a specific superior official, after whom his full title was generally completed by a genitive (for example vicarius praetoris). At a low level of societ… (More on Vicarius)