microfloppies

from The Free On-line Dictionary of Computing (8 July 2008)

microfloppies

   3.5-inch floppies, as opposed to 5.25-inch {vanilla} or
   mini-floppies and the now-obsolete 8-inch variety.  This term
   may be headed for obsolescence as 5.25-inchers pass out of
   use, only to be revived if anybody floats a sub-3-inch floppy
   standard.  See {stiffy}, {minifloppies}.

   [{Jargon File}]