noun. 
                    Acronym rapid eye movement, a sleep state.
                  
                
                  
                    noun. 
                    A remark; a programming language statement used for documentation (in BASIC for example); also used in DOS batch files.
                  
                
                  
                    abbreviation. 
                    remaining
                  
                
                  
                    noun. 
                    A dose of absorbed radiation equivalent to one roentgen of X-rays or gamma rays