definition of
retentiveness

[1] #1 retentiveness n. [memory, retention, retentivity] the power of retaining and recalling past experience; "he had a good memory when he was younger". wn

[2] #2 retentiveness n. [retentivity] the property of retaining possessions that have been acquired. wn

[3] #3 retentiveness n. [retentivity, retention] the power of retaining liquid; "moisture retentivity of soil". wn