Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See optical disk.

from the GNU version of the Collaborative International Dictionary of English

  • n. A digital data storage medium consisting of a thin disk onto which the data is impressed by a laser, in the form of a linear sequence of dots; same as optical disk. The data is subsequently read back by the use of a laser beam. See also compact disk.

Etymologies

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