Gerund functioning as a noun meaning the act or process of enhancing.
Definitions
The act or process of improving or augmenting something. The enhancing of the photograph brought out details previously unseen.
enhancegerund / present participle Used attributively to describe something that improves or augments another thing.
Definitions
Serving to improve, intensify, or augment something. She applied a shine-enhancing serum to her hair.