'Interestingness' definitions:

Definition of 'interestingness'

From: WordNet
noun
The power of attracting or holding one's attention (because it is unusual or exciting etc.); "they said nothing of great interest"; "primary colors can add interest to a room" [syn: interest, interestingness] [ant: uninterestingness]

Definition of 'Interestingness'

From: GCIDE
  • Interestingness \In"ter*est*ing*ness\, n. The condition or quality of being interesting. --A. Smith. [1913 Webster]