| metal oxide semiconductor field-effect transistor [`med·ǝl ¦äk´sīd `sem·i·kǝn´dǝk·tǝr `fēld i´fekt tran`zis·tǝr] ELECTRONICS A field-effect transistor having a gate that is insulated from the semiconductor substrate by a thin layer of silicon dioxide. Abbreviated MOSFET; MOST; MOS transistor.Formerly known as insulated-gate field-effect transistor. |