Opodeldoc \Op`o*del"doc\, n. [So called by Paracelsus. The first syllable may be fr. Gr. ? vegetable juice.] 1. A kind of plaster, said to have been invented by Mindererus, -- used for external injuries. [Obs.] 2. A saponaceous, camphorated liniment; a solution of soap in alcohol, with the addition of camphor and essential oils; soap liniment.