retention
noun
[ rɪˈtɛnʃ(ə)n ]
• the continued possession, use, or control of something.
• the action of absorbing and continuing to hold a substance.
• "the soil's retention of moisture"
Origin:
late Middle English (denoting the power to retain something): from Old French, from Latin retentio(n- ), from retinere ‘hold back’ (see retain).
