Correct spelling for the English word "dymal" is [dˈa͡ɪmə͡l], [dˈaɪməl], [d_ˈaɪ_m_əl] (IPA phonetic alphabet).
Trade name of a preparation of didymium salicylate, employed as a dusting-powder or in 10 per cent. ointment in bedsores, hyperidrosis, ulcers, and other affections of the skin.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.