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Wiktionary
fixed disk

alt. A hard disk n. A hard disk

WordNet
fixed disk

n. a rigid magnetic disk mounted permanently in a drive unit [syn: hard disc, hard disk]

Usage examples of "fixed disk".

He was in a Wheel host whose spherical body rolled freely in any direction and whose magnetically fixed disk possessed the assorted sensory equipment of the species.

The man who believes in the earth as a fixed disk under heaven also sees and believes in sunrise and sunset, in dawn and doom -- and all, almost all men believe in that fixed disk!