Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. natrolite

from the GNU version of the Collaborative International Dictionary of English

  • n. Natrolite; -- called also needle zeolite.

from The Century Dictionary and Cyclopedia

  • n. A name given by the older mineralogists to acicular varieties of natrolite, scolecite, and other minerals.

Etymologies

needle +‎ stone (Wiktionary)

Examples

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