platinum black

plat·i·num black

P p

Definitions of platinum black words

noun platinum black a black powder consisting of very finely divided metallic platinum, used as a catalyst, especially in organic synthesis. 1
noun platinum black a black powder consisting of very finely divided platinum metal. It is used as a catalyst, esp in hydrogenation reactions 0
noun platinum black a black powder of finely divided metallic platinum, made by reduction of platinum salts: used as a catalyst, as in organic synthesis 0

before 1850

One of the 32% newest English words

First recorded in 1850-55

noun

adjective

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adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 5% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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