tantalous

[tan-tl-uh s]

adjective Chemistry.

containing trivalent tantalum.

Origin of tantalous

First recorded in 1865–70; tantal(um) + -ous

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British Dictionary definitions for tantalous

tantalous

adjective

of or containing tantalum in the trivalent state

Word Origin for tantalous

C19: from tantal (um) + -ous

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012