REM

from WordNet (r) 3.0 (2006)
REM
    n 1: a recurring sleep state during which dreaming occurs; a
         state of rapidly shifting eye movements during sleep [syn:
         {paradoxical sleep}, {rapid eye movement sleep}, {REM
         sleep}, {rapid eye movement}, {REM}]
    2: (Roentgen Equivalent Man) the dosage of ionizing radiation
       that will cause the same amount of injury to human tissue as
       1 roentgen of X-rays
    
from The Free On-line Dictionary of Computing (8 July 2008)
REM

   <programming> (From "remark") The {keyword} used in {BASIC} to
   introduce a {comment} (which continues to the end of the
   line).  {MS-DOS} probably borrowed it from {BASIC}.  Might be
   used in the form "REM out" meaning to {comment out}.

   (1998-04-27)
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
REM
       Remote Equipment Module
       
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
REM
       Ring Error Monitor
       
    

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