#1 retentivity n. [memory, retention, retentiveness] the power of retaining and recalling past experience; "he had a good memory when he was younger". wn
#2 retentivity n. [retentiveness] the property of retaining possessions that have been acquired. wn
#3 retentivity n. [retentiveness, retention] the power of retaining liquid; "moisture retentivity of soil". wn
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