We don't have synonyms for optical disks yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are optical disk, optical discs and optical disc.
(n) :
Alternative spelling of optical disc. [(computer hardware) A modern data storage medium consisting of a flat disc read mechanically by illumination with laser light, including the Laserdisc, compact disc, DVD, and Blu-ray.]
(n) :
Alternative spelling of optical disc. [(computer hardware) A modern data storage medium consisting of a flat disc read mechanically by illumination with laser light, including the Laserdisc, compact disc, DVD, and Blu-ray.]