infernalINFERN'AL, a. [L. infernus.] INFERN'AL, n. An inhabitant of hell, or of the lower regions. Infernal stone [Lapis infernalis.] a name formerly given to lunar caustic, a substance prepared from an evaporated solution of silver, or from crystals of silver. Lunar caustic is nitrate of silver fused and cast in small cylinders. |