from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. sulphide of mercury in a black isometric form
from the GNU version of the Collaborative International Dictionary of English
- n. Sulphide of mercury in isometric form and black in color.
from The Century Dictionary and Cyclopedia
- n. Native mercuric sulphid, crystallizing in tetrahedral crystals, resembling those of the zinc sulphid sphalerite, also occurring massive of a black or grayish-black color. It is found with the red mercuric sulphid cinnabar in California.
meta- + cinnabarite (Wiktionary)