'Fattiness' definitions:

Definition of 'fattiness'

From: WordNet
noun
Having the property of containing fat; "he recommended exercise to reduce my adiposity" [syn: adiposity, adiposeness, fattiness]

Definition of 'Fattiness'

From: GCIDE
  • Fattiness \Fat"ti*ness\, n. State or quality of being fatty. [1913 Webster]