Fifteenth

[A. S. fifteotha, fiftetha, ordinal of fif tyne.] The fifth after the tenth; the ordinal of fifteen; containing one part in fifteen. -n. One of the lo equal parts into which any unit may be divided. ( Mus .) An interval of two octaves; also, a name given to a stop on the organ, a double octave above the diapason, as its name imports. Fifth, a . [A. S. fifta . See FIVE.] The ordinal of five; the next in order after the fourth; containing one part in five.