retention
noun
Meaning
The act of retaining or something retained
The act or power of remembering things
A memory; what is retained in the mind
The involuntary withholding of urine and faeces
The length of time an individual remains in treatment
That which contains something, as a tablet; a means of preserving impressions.
The act of withholding; restraint; reserve.
A place of custody or confinement.
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.