retention retention /riːˈtɛnʃən/

noun

1. () The act of retaining something  ( keeping , holding , retention )
   the act of retaining something
     The company focused on employee retention through attractive benefits.
   The company focused on employee retention through attractive benefits.
   
2. () The power of retaining and recalling past experience  ( retentivity , retention , retentiveness , memory )
   the power of retaining and recalling past experience
    He had a good memory when he was younger
   he had a good memory when he was younger
   
3. The power of retaining liquid  ( retention , retentiveness , retentivity )
   the power of retaining liquid
    Moisture retentivity of soil
   moisture retentivity of soil