Definition:

A pico projector is a small, pocket-sized projector that's usually about the size of an iPhone (give or take). It can be used to project images, video or documents. Some feature built-in memory so the data can be loaded directly onto the projector while others feature memory card or USB slots. Many pico projectors also come with built-in audio capabilities.

For more on pico projectors, see the Pico Projector Buying Guide.