LXXX is the Roman numeral representation for the number 80. In the Roman numeral system, letters are used to signify values, with "L" representing 50 and "X" representing 10. Therefore, LXXX combines one "L" and three "X" to total 80. Roman numerals, including LXXX, were widely used in ancient Rome for various purposes, such as numbering chapters, clock faces, and denoting years. This numeral system is still used today in specific contexts, such as in the titles of monarchs and popes, as well as in the naming of events like the Olympics.