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tan•ta•lum



Pronunciation: (tan'tl-um), [key]
n. Chem.
a gray, hard, rare, metallic element occurring in columbite and tantalite and usually associated with niobium: used, because of its resistance to corrosion by most acids, for chemical, dental, and surgical instruments and apparatus. Symbol: Ta; at. wt.: 180.948; at. no.: 73; sp. gr.: 16.6.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

tantalousTantalus
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