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metal oxide semiconductor

or metal-oxide semiconductor

noun, Electronics.
a three-layer sandwich of a metal, an insulator (usually an oxide of the substrate), and a semiconductor substrate, used in integrated circuits.
Abbreviation: MOS. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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metal oxide semiconductor in Technology

(MOS) The three materials used to form a gate in the most common kind of Field Effect Transistor - a MOSFET.
[Other MOS devices?]

The Free On-line Dictionary of Computing, © Denis Howe 2010
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