Developed and introduced by IBM in 1980, and coined by David Patterson, RISC is short for reduced instruction set computing. RISC is a processor architecture that requires less instructions to operate, causing the processors to be faster than earlier CISC (complex instruction set computer) processors. Today, RISC and CISC processors share many of the same instruction techniques and operate at similar speeds.
RISC is pronounced as "risk." The father of RISC is considered to be John Cocke.