from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mineral with monoclinic crystals of the chemical formula Al2(PO4)(OH)3.
from The Century Dictionary and Cyclopedia
- n. A hydrated phosphate of aluminium occurring in tabular monoclinic crystals and in cleavable masses with strong pearly cleavage: first found in Sweden, and now also in Bolivia.
From Ancient Greek αὐγή (auge, "luster"), named in 1868. (Wiktionary)