- tending or serving to retain something.
- having power or capacity to retain.
- having power or ability to remember; having a good memory.
- having the capacity to retain or remember
adj.late 14c., “able to hold or keep” (mental or physical), from Old French retentif, from Medieval Latin retentivus, from past participle stem of Latin retinere (see retain). Related: Retentively; retentiveness.