I*sop"a*thy (?), n. [Iso- + Gr.
? suffering.] (Med.) (a) The system
which undertakes to cure a disease by means of the virus of the same
disease. (b) The theory of curing a
diseased organ by eating the analogous organ of a healthy
animal. Mayne. (c) The doctrine
that the power of therapeutics is equal to that of the causes of
disease.