The Free On-line Dictionary of Computing (30 December 2018):

Intel 80386
386
80386
i386

    (Commonly abbreviated to "386", trademark
   "Intel386") The successor to the Intel 80286
   microprocessor.  It was the first Intel processor with
   32-bit data and address busses.  It can address four
   gigabytes (2^32 bytes) of memory; however, 16 megabytes is a
   typical maximum in IBM PCs.  The 386 allows multiple
   application programs to run at the same time (when running
   under 386-specific operating systems) using "protected
   mode".

   The first IBM compatible to use the 386 was the Compaq
   386, before IBM used it in high-end models of their PS/2
   series.  It is also used in HP's RS series and many
   others.

   It does not require special EMS memory boards to expand
   MS-DOS memory limits.  With the 386, the EMS standard can be
   simulated in normal extended memory, and many DOS add-ons
   provide this "Expanded Memory Manager" feature.

   See also Intel 80386SX, BSD386.

   (1995-02-21)