optical disk
optical disc

I've never seen a horse, but in the old optical disks they carried people.

These machines translate photo images into data that can be "written" onto optical disks.

The laser is used in the device to read the optical disk.

And of course for the upgrade two years from now, when they bring on line the optical disks.

In the future, it is likely to be a desktop computer, drawing its images from a shiny, optical disk.

Yes, they never got the price down and the optical disks proved unreliable.

The optical disk is interesting but not yet standardized - that technology can change.

Until all software that people own on optical disks is deprecated.

The optical disks, which sell for about $50, are removable.

"The optical disk will bring a merger of audio and video."