Refinement (noun)

1. The act or process of making something pure or more precise.
2. The process of improving or making something more sophisticated.
3. The quality of being polite and cultured.

Origin:

From refine meaning "improve or make more precise".

Examples:

1. The refinement of the diamond increased its value.
2. The new model is a refinement of the previous design.
3. His manners were a sign of refinement.
4. The wine had a refinement on the palate.
5. The refinement of the search algorithm improved the results.