1. An improvement that makes something more agreeable or pleasant: "Enhancement is the increasing of the value or attractiveness of something or perhaps the increasing of someone's power."

"Boldness and eloquence can lead to the enhancement of a politician's popularity and effectiveness."

2. With computers, a change to a product which is intended to make it better in some way: "Certain enhancements usually result in new functions and become faster, or they may even be more compatible with other systems."

"Enhancements to hardware components; especially, integrated circuits often mean they are smaller and less demanding of electrical resources."