Integration is the act of taking data from one software application (output) and, without human intervention, using it as input into a separate application.

Webster Dictionary:

1. An act or instance of combining into an integral whole.

2. An act or instance of integrating a racial, religious, or ethnic group.

3. An act or instance of integrating an organization, place of business, school, etc.

Mathematics:

1. The operation of finding the integral of a function or equation, especially solving a differential equation.

2. Behavior, as of an individual, that is in harmony with the environment.