n. [ Mercurial + -ism. ] (Med.) The syndrome produced by poisoning due to exposure to mercury, it fumes, or its compounds; mercury poisoning. Such exposure may occur in mining or smelting, or in using mercurial compounds. [ 1913 Webster ]

n. 1. One under the influence of Mercury; one resembling Mercury in character. [ 1913 Webster ]

2. (Med.) A physician who uses much mercury, in any of its forms, in his practice. [ 1913 Webster ]