HyperDicEnglishPLATI ... platinum black

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Related WikiPedia: platinum black
English 1 sense of the expression platinum black:
NOUNsubstanceplatinum blacka fine black powder of platinum
Englishplatinum black: 1 sense noun 1, substance
MeaningA fine black powder of platinum; used as a catalyst in chemical reactions.
Broadercatalyst, accelerator(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
Spanishnegro de platino

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