from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mineral form of lead sulfate with the chemical formula Pb2(SO4)O, an oxidation product of galena, whose acicular monoclinic prismatic crystals are white or light green.
from the GNU version of the Collaborative International Dictionary of English
- n. A mineral consisting of sulphate of lead, occurring either massive or in long slender prisms, of a greenish white or gray color.
from The Century Dictionary and Cyclopedia
- n. A basic sulphate of lead occurring in greenish-white or pale-yellow monoclinic crystals at Leadhills in Lanarkshire, Scotland.
Lanarkshire, where it was discovered, and -ite. (Wiktionary)