from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A valuable silver ore, Ag2S, with a lead-gray color and metallic luster that is often tarnished a dull black.

from The Century Dictionary.

  • noun Silver sulphid, a blackish lead gray mineral, occurring in crystals, in crusts, and massive.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) Sulphide of silver; -- also called vitreous silver, or silver glance. It has a metallic luster, a lead-gray color, and is sectile like lead.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy Silver sulphide, (Ag2S), a primary ore of silver, in cubic or hexoctahedral crystals.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a valuable silver ore consisting of silver sulfide (Ag2S)


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