#acetate_disk__acetatedisk__phonograph_recording_disk  a disk coated with cellulose acetate
  supertype:  #disk__disc  a thin flat circular plate
  part of:  #phonograph_record__phonograph_recording__record__disk__disc__platter  sound recording consisting of a disc with continuous grooves; formerly used to reproduce music by rotating while a phonograph needle tracked in the grooves

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