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(n.) A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.
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Webster, Noah. Entry for 'Zirconium'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/z/zirconium.html. 1828.