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platinum

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noun, often attributive plat·i·num \ˈplat-nəm, ˈpla-tə-nəm\

Definition of platinum

  1. 1 :  a precious grayish-white noncorroding ductile malleable heavy metallic element that fuses with difficulty and is used especially in chemical ware and apparatus, as a catalyst, and in dental and jewelry alloys — see element table

  2. 2 :  a moderate gray

Origin and Etymology of platinum

New Latin, from Spanish platina, from diminutive of plata silver — more at plate


First Known Use: 1808


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platinum

adjective plat·i·num

Definition of platinum

  1. :  qualifying for a platinum record

go platinum

  1. :  to have enough sales to qualify for a platinum record

1971

First Known Use of platinum

1971


PLATINUM Defined for English Language Learners

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platinum

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noun, often attributive plat·i·num \ˈplat-nəm, ˈpla-tə-nəm\

Definition of platinum for English Language Learners

  • : a heavy, silver-colored metal that is difficult to melt and that is used especially in expensive jewelry


PLATINUM Defined for Kids

platinum

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noun plat·i·num \ˈpla-tə-nəm\

Definition of platinum for Students

  1. :  a heavy grayish white metallic chemical element


Medical Dictionary

platinum

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noun plat·i·num \ˈplat-nəm, -ən-əm\

Medical Definition of platinum

  1. :  a heavy precious grayish white noncorroding ductile malleable metallic element that fuses with difficulty and is used especially in chemical ware and apparatus, as a catalyst, and in dental and jewelry alloys—symbol Pt; see element table



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