The Collaborative International Dictionary of English v.0.48:

Transportable \Trans*port"a*ble\, a. [Cf. F. transportable.]
   1. Capable of being transported.
      [1913 Webster]

   2. Incurring, or subject to, the punishment of
      transportation; as, a transportable offense.
      [1913 Webster]

WordNet (r) 3.0 (2006):

transportable
    adj 1: capable of being moved or conveyed from one place to
           another [syn: movable, moveable, transferable,
           transferrable, transportable]

Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "transportable":
   assignable, communicable, conductive, consignable, contagious,
   conveyable, expressable, impartable, interchangeable, mailable,
   metathetic, movable, portable, portative, removable, transferable,
   transfusable, transmissible, transmissive, transmittable,
   transportative, transposable