Latin. n. Red pigment dragon's blood, resin of tree pterocarpus draco.
- n. (Min.) Red sulphide of mercury, occurring in brilliant red crystals, and also in red or brown amorphous masses. It is used in medicine. The artificial red sulphide of mercury used as a pigment; vermilion. Cinnabar Græcorum (Med.) Same as Dragon's blood.
- Green cinnabar, a green pigment consisting of the oxides of cobalt and zinc subjected to the action of fire.
- Hepatic cinnabar (Min.), an impure cinnabar of a liver-brown color and submetallic luster.