from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A gray, brown, or pink mineral, Ca2Al3(SiO4)3(OH), used in ornamental stonework.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mineral with orthorhombic crystals, Ca2Al3(SiO4)(Si2O7)O(OH).
from the GNU version of the Collaborative International Dictionary of English
- n. A grayish or whitish mineral occurring in orthorhombic, prismatic crystals, also in columnar masses. It is a silicate of alumina and lime, and is allied to epidote.
from The Century Dictionary and Cyclopedia
- n. A mineral closely related to epidote, but orthorhombic in crystallization.
German Zoisit, after Baron Sigismund Zois von Edelstein (1747-1819), Slovenian noble.(American Heritage® Dictionary of the English Language, Fourth Edition)
Named after Austrian scientist Baron Sigmund Zois von Edelstein (1747-1819) in 1805. -ite (Wiktionary)