1. 
   USR
   Upstage right.
   Found op http://www.encyclo.co.uk/local/21207
   
   
2. 
   USR
   US Robotics (corporation)
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   USR
   Unheated serum reagin (test)
   Found op http://www.dyerlabs.com/glossary/microbiology/2w-x-y-z.html
   
   
4. 
   USR
   U.S. Robotics, Inc.
   Found op http://foldoc.org/USR
   
   
5. 
   usr
   User. The '/usr' directory hierarchy on Unix systems. Once upon a time, in the early days of Unix, this area actually held users' home directories and files. Since these tend to expand much faster than system files, /usr would be mounted on the biggest disk on the system. The root directory, '/'...
   Found op http://foldoc.org/usr
   
   
6. 
   USR
   Upstage right.
   Found op http://www.britishtheatreguide.info/otherresources/glossary/glosswz.htm
   
   
7. 
   USR
   Unit Status Report
   Found op http://en.wikipedia.org/wiki/List_of_U.S._government_and_military_acronyms
   
   
8. 
   usr
   1) Abbreviation for user service routines
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/usr/1
   
   

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