Solid-state device
In computers, solid state is used to describe a storage media that does not involve magnetic disks or any moving parts. For example, computer memory (RAM), utilizes solid state media. RAM consists of microchips that store data on non-moving components, providing for fast retrieval of that data. The transistor is considered to be the first widely used solid-state device and is still being used in almost all electronic devices today.
Also see: Electronics definitions, Flash drive, SSD