hard disk

from WordNet (r) 3.0 (2006)

hard disk
    n 1: a rigid magnetic disk mounted permanently in a drive unit
         [syn: {hard disc}, {hard disk}, {fixed 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 The Free On-line Dictionary of Computing (8 July 2008)

hard disk
floating head

   <storage> (In contrast to {floppy disk}) A {magnetic disk}
   data storage device where the disks are rigid and fixed to a
   central axle.  They are usually packaged with associated
   read/write heads and electronics.  Most hard disks are
   permanently connected to the drive (fixed disks) though there
   are also {removable hard disks}.

   See {magnetic disk}.

   (2007-06-14)

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