[syn: lengthiness, prolongation, continuation, protraction]
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
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]