Definition of retention
1a : the act of retaining : the state of being retained
b : abnormal retaining of a fluid or secretion in a body cavity
2a : power of retaining : retentiveness
b : an ability to retain things in mind specifically : a preservation of the aftereffects of experience and learning that makes recall or recognition possible
3 : something retained
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Time Traveler for retention
The first known use of retention was in the 14th century
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