lengthiness

from WordNet (r) 3.0 (2006)

lengthiness
    n 1: amount or degree or range to which something extends; "the
         wire has an extension of 50 feet" [syn: {extension},
         {lengthiness}, {prolongation}]
    2: the consequence of being lengthened in duration [syn:
       {lengthiness}, {prolongation}, {continuation}, {protraction}]

from The Collaborative International Dictionary of English v.0.48

Lengthiness \Length"i*ness\, n.
   The state or quality of being lengthy; prolixity.
   [1913 Webster] Lengthways