from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A hydrous aluminium sulfate mineral with formula Al2SO4(OH)4·7(H2O).

from the GNU version of the Collaborative International Dictionary of English

  • n. A hydrous sulphate of alumina occurring in white reniform masses.

from The Century Dictionary and Cyclopedia

  • n. In petrography, a phaneric, granular igneous rock composed of orthorhombic and monoclinic pyroxenes; a variety of pyroxenite.
  • n. Aluminite; hydrous tribasic sulphate of aluminium, found in Sussex, England, and at Halle in Prussia, in reniform masses and botryoidal concretions of a white or yellowish-white color.


Sorry, no etymologies found.



Log in or sign up to get involved in the conversation. It's quick and easy.