Also found in: Wikipedia.
MOS-controlled thyristor[¦em¦ō¦es kən‚trōld thī′ris·tər]
A type of thyristor in which there is a very thin metal oxide semiconductor (MOS) integrated circuit in the top surface of the high-power thyristor components, so that only a small gate current is needed to turn the entire device off or on. Abbreviated MCT.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.