The term "80th" refers to the ordinal number that indicates the position of something in a sequence, specifically the one that comes after the 79th and before the 81st. It is commonly used to denote anniversaries, milestones, or rankings, such as the 80th birthday or the 80th Academy Awards. In mathematics, "80th" can also represent a fraction or percentage, such as the 80th percentile, which indicates that a score is higher than 80% of the data set. This concept is often used in statistics to analyze performance or distribution within a group.