robustness

from WordNet (r) 3.0 (2006)

robustness
    n 1: the property of being strong and healthy in constitution
         [syn: {robustness}, {hardiness}, {lustiness}, {validity}]
    2: the characteristic of being strong enough to withstand
       intellectual challenge; "the lack of robustness in the
       findings may be due to the small size of the sample"

from The Collaborative International Dictionary of English v.0.48

Robustness \Ro*bust"ness\, n.
   The quality or state of being robust.
   [1913 Webster]