E Pluribus Unum on the great seal of the United States.  E pluribus unum  is the official motto of the United States. It means out of many, one in Latin. It has been placed on the U.S. dollar bill, and other related items.E pluribus unum  is the official motto of the United States. It means out of many, one in Latin. It has been placed on the U.S. dollar bill, and other related items.