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English definition of “mercurial”

mercurial

adjective (related to mercury)    /mɜːˈkjʊə.ri.əl/ US  /mɜːrˈkjʊr.i-/ specialized
containing or caused by mercury : mercurial drugs Medicine
(Definition of mercurial adjective (related to mercury) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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