As a noun denseness is
the quality of being dense, especially in the sense of limited mental capacity.
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Not English
Wikidiffcom has no English definition. It may be misspelled. denseness
English
Noun
(en-noun)
The quality of being dense, especially in the sense of limited mental capacity.
Usage notes
The word density is more commonly used for the quality of being dense in the physical sense, though both terms are occasionally used interchangeably.