platinum black

platinum black

noun Chemistry.
a black powder consisting of very finely divided metallic platinum, used as a catalyst, especially in organic synthesis.

Origin:
1850–55
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Platinum black is always a great word to know.
So is titanic. Does it mean:
of or containing titanium, especially in the tetravalent state or three valence state
a compound of high molecular weight made by adding many smaller molecules or by condensation smaller molecules with the elimination of water or alcohol
Collins
World English Dictionary
platinum black
 
n
chem a black powder consisting of very finely divided platinum metal. It is used as a catalyst, esp in hydrogenation reactions

Collins English Dictionary - Complete & Unabridged 10th Edition
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