Dedication (noun)

1. The quality of being dedicated or committed to a task or purpose.
2. The act of dedicating something to a particular person or purpose.
3. An inscription in a book in honor of a person.

Origin:

Middle english: via old french from latin dedicatio(n-), from dedicare "dedicate".

Examples:

1. His dedication to the project was impressive.
2. The dedication of the monument was a grand event.
3. The dedication of the book was to his parents.
4. His dedication to his job was admirable.
5. The dedication of the team was evident in their hard work.