Definition of Jeffirsonite

Jef"fer*son*ite (?), n. [Named after Thomas Jefferson.] (Min.) A variety of pyroxene of olive-green color passing into brown. It contains zinc.

- Webster's Unabridged Dictionary (1913)

Named after Thomas Jefferson
(Mineralogy): A variety of pyroxene of olive-green color passing into brown. It contains zinc

- The Nuttall Encyclopedia

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The correct Spelling of this word is: Jeffersonite

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