Simple:
* The professor's preeminence in the field of astrophysics is undeniable.
* The company achieved preeminence in the market due to its innovative products.
With descriptive details:
* Through decades of dedicated research, Dr. Lee established her preeminence as a leading expert on human genetics.
* The city's preeminence as a cultural hub is evident in its numerous museums, theaters, and art galleries.
In a comparative context:
* While several companies produce quality software, Acme's preeminence is undeniable due to its user-friendly interface and robust features.
* Despite facing stiff competition, the athlete's preeminence in the sport remained unchallenged.
Figurative language:
* The oak tree stood tall, its preeminence in the forest undisputed by the surrounding saplings.
* Her preeminence in the art world was evident in the sheer volume of art collectors eager to own her work.
Remember: "Preeminence" is a noun, referring to the state of being superior or more important than others. It often implies a position of authority or expertise.