Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A variety of the zinc spinel or gahnite.

from the GNU version of the Collaborative International Dictionary of English

  • n. A variety of the zinc spinel or gahnite.

from The Century Dictionary and Cyclopedia

  • n. A name given to a variety of gahnite, or zinc-spinel, from Sussex county, New Jersey, containing a small percentage of manganese: so named because difficult to dissolve.

Etymologies

Ancient Greek meaning "hard to loosen or dissolve". (Wiktionary)

Examples

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