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3 definitions found
 for floppy disk
From The Collaborative International Dictionary of English v.0.48 :

  magnetic disc \magnetic disc\, magnetic disk \magnetic disk\n.
     A ditical memory device consisting of a flat disk covered
     with a magnetic coating on which information is stored; a
     hard disk, floppy disk, and diskette are typically
     magnetic disks.
     Syn: disk, disc.
          [WordNet 1.5]

From WordNet (r) 3.0 (2006) :

  floppy disk
      n 1: a small plastic magnetic disk enclosed in a stiff envelope
           with a radial slit; used to store data or programs for a
           microcomputer; "floppy disks are noted for their relatively
           slow speed and small capacity and low price" [syn:
           diskette, floppy, floppy disk]

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

  floppy disk
  double density
  high density
      (Or "floppy", "diskette") A small,
     portable plastic disk coated in a magnetisable substance used
     for storing computer data, readable by a computer with a
     floppy disk drive.  The physical size of disks has shrunk from
     the early 8 inch, to 5 1/4 inch ("minifloppy") to 3 1/2 inch
     ("microfloppy") while the data capacity has risen.
     These disks are known as "floppy" disks (or diskettes) because
     the disk is flexible and the read/write head is in physical
     contact with the surface of the disk in contrast to "{hard
     disks" (or winchesters) which are rigid and rely on a small
     fixed gap between the disk surface and the heads.  Floppies
     may be either single-sided or double-sided.
     3.5 inch floppies are less floppy than the larger disks
     because they come in a stiff plastic "envelope" or case, hence
     the alternative names "stiffy" or "crunchy" sometimes used to
     distinguish them from the floppier kind.
     The following formats are used on IBM PCs and elsewhere:
      Capacity  Density  Width
       360K	   double   5.25"
       720K	   double   3.5"
       1.2M	   high	    5.25"
      1.44M	   high	    3.5"
     Double denisty and high density are usually abbreviated DD and
     HD.  HD 3.5 inch disks have a second hole in the envelope and
     an overlapping "HD" logo.

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