from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An orthorhombic ammonium magnesium phosphate mineral.
from the GNU version of the Collaborative International Dictionary of English
- n. A crystalline mineral found in guano. It is a hydrous phosphate of magnesia and ammonia.
from The Century Dictionary and Cyclopedia
- n. A hydrous phosphate of ammonium and magnesium, often occurring in connection with guano-deposits. It is found in orthorhombic crystals, often hemimorphie, and has a white or pale-yellow color and vitreous luster.
Sorry, no etymologies found.