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TAKE THE QUIZmercuric sulfide
noun
: an insoluble compound HgS occurring in nature as the red mineral cinnabar and the black mineral metacinnabar and also made synthetically in red and black forms
called also mercury(II) sulfide
see vermilion sense 1aLove words? Need even more definitions?
Merriam-Webster unabridged
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- The business’s new computer system proved not to be a panacea.


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