1. Noun
Red sulphide of mercury, occurring in brilliant red crystals, and also in red or brown amorphous masses. It is used in medicine.
2. Noun
The artificial red sulphide of mercury used as a pigment; vermilion.
3. Noun
a heavy reddish mineral consisting of mercuric sulfide; the chief source of mercury
Vocabulary classified under Chemistry
4. Noun
large red-and-black European moth; larvae feed on leaves of ragwort; introduced into United States to control ragwort
Vocabulary classified under Nature and environment
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