The Collaborative International Dictionary of English v.0.48:
Diverseness \Di*verse"ness\, n. The quality of being diverse. [1913 Webster]WordNet (r) 3.0 (2006):
diverseness n 1: noticeable heterogeneity; "a diversity of possibilities"; "the range and variety of his work is amazing" [syn: diverseness, diversity, multifariousness, variety]