Proper noun (thing)
    
  
    SD Card (Secure Digital Card)  
          
      
          
      
      
   
  
                  
                            
              
  
                  
                            
              
  
    
        a non-volatile memory standard format developed for use to store and transfer data between various portable devices such as cameras and handheld video games        
          
      
          
      
      
    
  
      SD cards are available in different sizes and speeds, including SDHC, MicroSD and MicroSDX.