Requirement (noun)

1. Something that is needed or mandatory.
2. A necessary condition or quality.

Origin:

Late middle english: from old french, from latin requisitio(n-), from requisitus "required", past participle of requirere.

Examples:

1. The company has certain requirements for new employees.
2. The requirements for a passport include a completed application and two photos.
3. This software does not meet the system requirements.
4. The requirements for admission to the university are strict.
5. He has the requirements for a successful career in the field.