Nineteenth

Part of speech: noun (n.)

1. The quotient of a unit divided by nineteen; one of nineteen equal parts of anything.

2. The next in order after the eighteenth.

3. An interval of two octaves and a fifth.

Part of speech: adjective (a.)

1. Following the eighteenth and preceding the twentieth; coming after eighteen others.

2. Constituting or being one of nineteen equal parts into which anything is divided.