RETENTIVITY
retentiveness, retentivity, retention
(noun) the power of retaining liquid; “moisture retentivity of soil”
retentiveness, retentivity
(noun) the property of retaining possessions that have been acquired
memory, retention, retentiveness, retentivity
(noun) the power of retaining and recalling past experience; “he had a good memory when he was younger”
Source: WordNet® 3.1
Etymology
Noun
retentivity (countable and uncountable, plural retentivities)
the ability to retain, potential for retention
Synonym: retentiveness
(sciences) the capacity to retain magnetism after the magnetizing action
Source: Wiktionary
Re`ten*tiv"i*ty, n.
Definition: The power of retaining; retentive force; as, the retentivity of
a magnet.
Source: Webster’s Unabridged Dictionary 1913 Edition