Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Gypsum in the form of colorless clear crystals.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A soft, glassy form of gypsum (chemical formula CaSO4·2H2O).
  • n. The anion SeO32− derived from selenous acid; any salt or ester of selenous acid.

from the GNU version of the Collaborative International Dictionary of English

  • n. A salt of selenious acid.
  • n. A variety of gypsum, occuring in transparent crystals or crystalline masses.

from The Century Dictionary and Cyclopedia

  • n. [capitalized] A supposed inhabitant of the moon.
  • n. A foliated or crystallized and transparent variety of gypsum, often obtained in large thin plates somewhat resembling mica; also, specifically, a thin plate of this mineral used with the polarizing apparatus of the microscope.
  • n. In chem., a salt of selenium.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

Latin selēnītēs, from Greek selēnītēs (lithos), moon (stone), selenite (so called because it was believed to wax and wane with the moon), from selēnē, moon; see selenium.

Examples

Comments

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  • Selenite, satin spar, desert rose, and gypsum flower are the four crystalline varieties of gypsum.

    _Wikipedia

    February 14, 2008