CISC

CISC
A complex instruction set computer CISC
A complex instruction set computer (CISC) is a computer where single instructions can execute several low-level operations (such as a load from memory, an arithmetic operation, and a memory store) and/or are capable of multi-step operations or addressing modes within single instructions.
The term was retroactively coined in contrast to reduced instruction set computer (RISC)

Examples of CISC instruction set architectures are System/360 through z/Architecture, PDP-11, VAX, Motorola 68k, and x86.
http://en.wikipedia.org/wiki/Complex_instruction_set_computing