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Winchester disk

noun, Computers.
a hard disk that is permanently mounted in its unit.
Also called Winchester.
Origin of Winchester disk
First recorded in 1970-75; originally an IBM code name; the designation for a device containing two such disks was 3030 (each disk containing 30 megabytes), the same as the model number of a well-known Winchester rifle Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for Winchester disk

Winchester disk

a type of hard disk in which disks are permanently sealed, together with read-write heads, in an airtight container to keep dust out
Word Origin
C20: named after the 3030 Winchester rifle, as the original device would have had 3030 as its IBM number
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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