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plumbian
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plumbian
plumbian, a. Min. (ˈplʌmbɪən) [f. L. plumb-um lead + -ian 2.] Of a mineral: having a (small) proportion of a constituent element replaced by lead.1930 W. T. Schaller in Amer. Mineralogist XV. 571 Lead—plumbian. 1944 C. Palache et al. Dana's Syst. Min. (ed. 7) I. 804 Var. Ordinary. Calcium and uraniu...
Oxford English Dictionary
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titanian
tiˈtanian, a.2 Chem. [f. titani-um + -an.] † a. Of or pertaining to titanium. Obs. (Superseded by titanic a.2)1828 in Webster. 1846 in Worcester (citing Ure.) b. Min. [-ian 2.] Of a mineral: having a (small) proportion of a constituent element replaced by titanium.1930 Amer. Mineralogist XV. 572 Tit...
Oxford English Dictionary
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