Retention | Mean of retention in English Dictionary

/rɪˈtɛnʃən/

• Noun
• the act of keeping someone or something
1. the recruitment and retention of good employees
2. the retention of profits from all sales
• the act of keeping extra liquid, heat, etc., inside the body
1. pills to offset water retention
2. the retention of fluid
• the ability to keep something
1. The fabric has good color retention. [=the fabric's colors do not fade]

• the ability to remember things easily or for a long time
1. the retention of things learned in school
2. They say the herb promotes memory retention.