The act of retaining or something retained
The act or power of remembering things
A memory; what is retained in the mind
(medicine) The involuntary withholding of urine and faeces
(medicine) The length of time an individual remains in treatment
(law) The right to withhold a debt, or of retaining property until a debt due to the person claiming the right is duly paid; a lien.
(insurance) The portion of a potential damage that must be paid for by the holder of an insurance policy.