Definify.com
Webster 1913 Edition
Sixteenth
1.
Sixth after the tenth; next in order after the fifteenth.
2.
Constituting or being one of sixteen equal parts into which anything is divided.
Sixteenth note
(Mus.)
, the sixteenth part of a whole note; a semiquaver.
Six′teenthˊ
,Noun.
1.
The quotient of a unit divided by sixteen; one of sixteen equal parts of one whole.
2.
The next in order after the fifteenth; the sixth after the tenth.
3.
(Mus.)
An interval comprising two octaves and a second.
Moore (Encyc. of Music.)