willemite definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a hard, rhombohedral mineral, ZnSiO, an ore of zinc; zinc silicate
Origin: Dutch willemit, after Willem I (1772-1843), king of the Netherlands
willemite definition by American Heritage Dictionary
A colorless, vitreous to resinous, often fluorescent mineral, Zn2SiO4, a minor ore of zinc.
Origin: Dutch willemit, after Willem I (1772-1843), king of the Netherlands.