WordReference Random House Unabridged Dictionary of American English © 2025
heu•land•ite
(hyo̅o̅′lən dīt′),USA pronunciation n.
- Mineralogya white or transparent, colorless mineral of the zeolite family, hydrous calcium aluminum silicate, CaAl2Si7O18·6H2O, occurring in basic volcanic rocks in the form of crystals with a pearly luster.
- 1815–25; named after Henry Heuland, 19th-century English mineral collector; see -ite1