Determination (noun)

1. The quality of being determined; firmness of purpose.
2. The act of deciding or establishing something.
3. The process of finding out the exact nature, scope, or meaning of something.
4. The act of coming to a decision or of resolving to do something.
5. The quality of being resolved or resolute.

Origin:

Late middle english: from old french determination, or from latin determinatio(n-), from the verb determinare (see determine).

Examples:

1. She showed great determination in finishing the marathon.
2. The determination of the cause of the accident took weeks.
3. His determination to succeed was admirable.
4. The determination of the council was to build the new school.
5. Her determination to succeed was admirable.