81.   St. Peters, Mo.-based MEMC makes blank silicon wafers, from which computer memory chips are made.

82.   Steppers are the sophisticated machinery that etches circuitry into silicon wafers in the process of making semiconductors.

83.   System chips put both memory and logic functions onto a single silicon wafer.

84.   The company also said it is now building processors using a smaller process technology, and more individual chips are being built on larger silicon wafers.

85.   The new factory will produce customized chips that unite specialized semiconductors and logic circuitry on a single silicon wafer.

86.   The new factory will produce next-generation microprocessors on silicon wafers slightly larger and cost efficient.

87.   The two companies will limit their semiconductor businesses to the production of special, so-called system chips which put both memory and logic functions onto a single silicon wafer.

88.   The team applied an oxidising chemical, gadolinium nitrate, to a porous silicon wafer.

89.   Wafer fabrication involves imprinting circuits on silicon wafers that are cut into semiconductors, which act as the brain of computers and other electronic products.

90.   Wafer fabrication involves imprinting circuits on silicon wafers which are cut into semiconductors or microchips at the heart of computers.