tantalous

[ tan-tl-uh s ]
/ ˈtæn tl əs /

adjective Chemistry.

containing trivalent tantalum.

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Which of the following animal names traces its immediate origin to Portuguese?

Origin of tantalous

First recorded in 1865–70; tantal(um) + -ous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for tantalous

tantalous
/ (ˈtæntələs) /

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