Country name: conventional long form: Commonwealth of Puerto Rico
conventional short form: Puerto Rico
etymology: Christopher COLUMBUS named the island San Juan Bautista (Saint John the Baptist) and the capital city and main port Cuidad de Puerto Rico (Rich Port City); over time, however, the names were shortened and transposed and the island came to be called Puerto Rico and its capital San Juan
Definition: This entry includes all forms of the country's name approved by the US Board on Geographic Names (Italy is used as an example): conventional long form (Italian Republic), conventional short form (Italy), local long form (Repubblica Italiana), local short form (Italia), former (Kingdom of Italy), as well as the abbreviation and the etymology of the name. Also see the Terminology note.
Source: CIA World Factbook - This page was last updated on January 20, 2018