Diskette (noun)

1. A small, flat, usually square or rectangular plastic disk with a magnetic surface, used for storing computer data.
2. A type of removable storage media that has been largely replaced by other forms of storage such as USB drives, CD-ROMs and cloud storage.

Origin:

From disk ("a flat circular piece of metal, plastic, etc., used for storing information") + -ette (a diminutive suffix).

Examples:

1. He saved the document on a diskette.
2. The computer could only read the data from the diskette.
3. The diskette drive was a common peripheral in the 90s.
4. The floppy disk or diskette was a popular medium for data storage.
5. The game came on a diskette, but it required to be installed on the hard drive.