The Collaborative International Dictionary of English v.0.48:

Ductile \Duc"tile\, a. [L. ductilis, fr. ducere to lead: cf. F.
   ductile. See Duct.]
   1. Easily led; tractable; complying; yielding to motives,
      persuasion, or instruction; as, a ductile people.
      --Addison.
      [1913 Webster]

            Forms their ductile minds
            To human virtues.                     --Philips.
      [1913 Webster]

   2. Capable of being elongated or drawn out, as into wire or
      threads.
      [1913 Webster]

            Gold . . . is the softest and most ductile of all
            metals.                               --Dryden.
      -- Duc"tile*ly, adv. -- Duc"tile*ness, n.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ductileness
    n 1: the malleability of something that can be drawn into
         threads or wires or hammered into thin sheets [syn:
         ductility, ductileness]