tsr

from The Free On-line Dictionary of Computing (8 July 2008)
Terminate and Stay Resident
TSR

   (TSR) A type of {DOS} utility which, once loaded, stays in
   memory and can be reactivated by pressing a certain
   combination of keys.
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
TSR
       Terminate and Stay Resident
antiflux / dictionary / tsr
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