Chem. [a. G. veronal.] Diethyl-malonyl-urea, a white crystalline substance used as a hypnotic. Also attrib.
1903. Mercks Ann. Rep., XVII. 183. Veronal has been thoroughly tested in a large number of noted public and private hospitals.
1904. Lancet, 23 Jan., 223/2. A box of veronal cachets, each containing eight grains.