Substrate,

Definition of Substrate:

1. Primary or underlying material on which other materials (such as ink, coating, paint, or treatment) are applied, or from which other materials are made.

How to use Substrate in a sentence?

1. By testing different dyes for materials the scientists found that certain dyes did not work well with the substrate materials they were being applied to.
2. When you have carpet installed in your house it�s very important to have a clean, smooth substrate over which to place the pad and the carpet.
3. Some artists coat their canvas with gesso, an undercoat which provides a smooth substrate for the subsequent work of art to be painted on the canvas.