retention period
nounUK /rɪˈtɛnʃən ˈpɪəriəd/
US /rɪˈtɛnʃən ˈpɪriəd/
A retention period is the amount of time you keep something before you throw it away.
The library has a retention period of two weeks for borrowed books.
OTHER MEANINGS
2. The length of time a company or organization must keep official records before deleting them.
Financial documents have a retention period of seven years.
3. The time a computer system stores data before automatically removing it.
The app's retention period for messages is thirty days.
4. The time a person stays in a job, school, or program before leaving.
The school tracks the retention period of new students.