Elenctic

from The Collaborative International Dictionary of English v.0.48

Elenctic \E*lenc"tic\, Elenctical \E*lenc"tic*al\, a. [Gr.?.]
   (Logic)
   Serving to refute; refutative; -- applied to indirect modes
   of proof, and opposed to {deictic}.
   [1913 Webster]