Mydatoxin \Myd`a*tox"in\, n. [Gr. myda^n to be clammy (from decay) + toxic + in.] (Physiol. Chem.) A poisonous amido acid, {C6H13NO2}, separated by Brieger from decaying horseflesh. In physiological action, it is similar to curare. [1913 Webster]