See under mercuric oxide.
a slightly crystalline, water-soluble, poisonous compound, HgO, occurring as a coarse, orange-red powder (red mercuric oxide) or as a fine, orange-yellow powder (yellow mercuric oxide) used chiefly as a pigment in paints and as an antiseptic in pharmaceuticals.
a soluble poisonous substance existing in red and yellow powdered forms: used as pigments. Formula: HgO Systematic name mercury(II) oxide
noun 1. See under mercuric sulfide. mercuric sulfide or mercury sulfide noun, Chemistry. 1. a crystalline, water-insoluble, poisonous compound, HgS, occurring as a coarse, black powder (black mercuric sulfide) or as a fine, bright-scarlet powder (red mercuric sulfide) used chiefly as a pigment and as a source of the free metal.
- Red mercury
noun 1. a supposedly radioactive substance that could be used in a bomb made from nuclear waste, widely believed to be part of a confidence trick in which gangsters sold useless material to terrorists in the early 1990s
- Red mist
noun 1. (informal) a feeling of extreme anger that clouds one’s judgment temporarily
noun 1. purple mombin.