Metal Oxide Semiconductor

The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is by far the most common field-effect transistor in both digital and analog circuits. The MOSFET is composed of a channel of n-type or p-type semiconductor material (see article on semiconductor devices), and is accordingly called an NMOSFET or a PMOSFET (also commonly nMOSFET, pMOSFET).
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<electronics> (MOS) The three materials used to form a gate in the most common kind of Field Effect Transistor - a MOSFET.
[Other MOS devices?]
(1996-05-27)

a type of field effect transistor that uses silicon dioxide as the insulating layer between the gate electrode and the channel region.