Source : Free On-Line Dictionary of Computing

Single Instruction/Multiple Data
     
        (SIMD) (Or "data parallel") The classification under {Flynn's
        taxonomy} for a {parallel processor} where many processing
        elements ({functional units}) perform the same operations on
        different data.  There is often a central controller which
        broadcasts the instruction stream to all the processing
        elements.
     
        Contrast {Multiple Instruction/Multiple Data}.
     
        (1994-11-04)