Multi-touch

In computing, multi-touch refers to a touch sensing surface's (trackpad or touchscreen) ability to recognize the presence of two or more points of contact with the surface. This plural-point awareness is often used to implement advanced functionality such as pinch to zoom or activating predefined programs.

Usage by Apple
Apple popularized the term with the introduction of multi-touch LCD screen in the iPhone in 2007. The device also contained accelerometers and gyroscopes that could detect the orientation of the screen and adjust the video display.