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.