Med. [f. ANTI- + Gr. ὔδρωπ-α (see prec.) + -IN.] A crystalline principle obtained from the body or the cockroach, used in medicine as an antihydropic.
1875. H. Wood, Therap. (1879), 497. The dried bodies of cockroaches have long been popularly used in Russia as a remedy for dropsy, and under the name of antihydropin have been introduced into practical medicine.