Search Result for "meaningfulness": 
Wordnet 3.0

NOUN (1)

1. the quality of having great value or significance; 



The Collaborative International Dictionary of English v.0.48:

meaningfulness \meaningfulness\ n.
   the quality of having great meaning or value.
   [WordNet 1.5]


WordNet (r) 3.0 (2006):

meaningfulness
    n 1: the quality of having great value or significance [ant:
         meaninglessness]