from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sulfide of silver and antimony.
from the GNU version of the Collaborative International Dictionary of English
- n. A mineral of an iron-black color, and very sectile, consisting principally of sulphur, antimony, and silver.
from The Century Dictionary and Cyclopedia
- n. In mineralogy, a sulphid of antimony and silver, occurring in monoclinic crystals of an iron-black color with dark cherry-red streak.
Ancient Greek meyon, "smaller", and argyros, "silver", as its silver content is lower than most silver sulfides. (Wiktionary)