Hybrid

  1. Under the Orange Book standard for recordable CD, hybrid means a recordable disc that has one or more sessions already recorded, but the disc is not closed, leaving space open for future recording.
  2. Hybrid can also refer to a compact disc that contains both DOS/Windows and Apple software on the same disc. The DOS/Windows platform seen the disc as a normal ISO 9660 disc, while on a Mac it appears as a HFS disc.

Also see: Apple definitions, CD definitions, HFS, ISO 9660