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Definition of unusable - 1 dictionary result
un·us·a·ble   (ŭn-yōō'zə-bəl)   
adj.  

  1. That cannot be used: unusable byproducts.

  2. Not fit for use: unusable files on corrupted disks.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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