(adj.) Short for magneto-optical, a type of data storage technology that combines magnetic disk technologies with optical technologies, such as those used in CD-ROMs. Like magnetic disks, MO disks can be read and written to. And like floppy disks, they are removable. However, their storage capacity can be more than 200 megabytes, much greater than magnetic floppies. In terms of dataaccess speed, they are faster than floppies but not as fast as hard disk drives.
Removable Storage Overview Outlines the various removable storage technologies such as magnetic disk, magneto-optical and phase-change. Includes graphics, diagrams and an integrated glossary. This page is from "The PC Technology Guide."