demonstrably

from WordNet (r) 3.0 (2006)

demonstrably
    adv 1: in an obvious and provable manner; "his documentary
           sources are demonstrably wrong" [syn: {demonstrably},
           {provably}, {incontrovertibly}]

from The Collaborative International Dictionary of English v.0.48

Demonstrably \De*mon"stra*bly\, adv.
   In a demonstrable manner; incontrovertibly; clearly.
   [1913 Webster]

         Cases that demonstrably concerned the public cause.
                                                  --Clarendon.
   [1913 Webster]

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