1. the continued possession, use, or control of something: "the retention of deposits by landlords remains an issue"
▪ the fact of keeping something in one's memory: "the children's retention of facts"
▪ the action of absorbing and continuing to hold a substance: "the soil's retention of moisture"
▪ failure to eliminate a substance from the body:"eating too much salt can lead to fluid retention"
Word Originlate Middle English (denoting the power to retain something): from Old French, from Latin retentio(n-), from retinere ‘hold back’ (see retain).