The term "fifteenth" refers to the ordinal number that comes after fourteenth and before sixteenth. It is commonly used to indicate the position of an item in a sequence, such as the fifteenth day of the month or the fifteenth chapter of a book. In mathematics, it can also represent a fraction, specifically one part of fifteen equal parts. In music, "fifteenth" can refer to an interval that spans fifteen diatonic scale degrees, which is often called a double octave. This interval is significant in various musical compositions and can create a rich harmonic texture. Additionally, in sports, a team or player finishing in fifteenth place indicates their rank in a competition.