1. the ability to retain or remember information, experiences, or learned material
2. the quality of holding onto or keeping something for a long time

Examples

• Her retentiveness for historical facts impressed her teachers.
• The student’s poor retentiveness made studying difficult.
• Memory exercises can improve your retentiveness over time.
• The soil’s retentiveness helped the garden flourish during dry spells.
• His retentiveness of childhood memories was remarkable.
• The material’s retentiveness made it ideal for long-term storage.
• Teachers often test students’ retentiveness through pop quizzes.