a heavy reddish mineral consisting of mercuric sulfide; the chief source of mercury
large red-and-black European moth; larvae feed on leaves of ragwort; introduced into United States to control ragwort
A deep red mineral, mercuric sulfide, HgS; the principal ore of mercury; such ore used as the pigment vermilion.
of a vivid red to reddish-orange color
Of a bright red colour tinted with orange.