Definitions

from The Century Dictionary.

  • noun A variety of pyroxene occurring in large crystals, often with uneven faces and rounded edges, and having a dark olive-green color passing into brown.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A variety of pyroxene of olive-green color passing into brown. It contains zinc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy A variety of pyroxene of olive-green color passing into brown. It contains zinc.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Named after Thomas Jefferson

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Examples

  • In the first case (31) are varieties of felspar; in the second case (32) are micaceous and other mineral substances; in the third case (33) are basaltic hornblende, tremolite, &c.; in the fourth case (34) are varieties of asbestus, which defies the action of fire; jeffersonite; jenite from the Elba,

    How to See the British Museum in Four Visits W. Blanchard Jerrold 1855

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