Available Definitions:
1) a. - Following the eighteenth and preceding the twentieth; coming after eighteen others.
2) a. - Constituting or being one of nineteen equal parts into which anything is divided.
3) n. - The quotient of a unit divided by nineteen; one of nineteen equal parts of anything.
4) n. - The next in order after the eighteenth.
5) n. - An interval of two octaves and a fifth.