retention time



  • The length of time a wastewater is retained in a clarification tank for settling of suspended solids.


  • The time interval during which a storage medium, such as RAM, a hard disk, a smart card, or an optical disc, can reliably retain data. Also called retention period (2), or storage time (1).
  • synonymretention period
  • The time interval during which data, records, files, archives, or the like must be stored.