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protactinium

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noun prot·ac·tin·i·um \ˌprō-ˌtak-ˈti-nē-əm\

Definition of protactinium

  1. :  a shiny radioactive metallic element of relatively short life — see element table



Origin and Etymology of protactinium

New Latin


First Known Use: 1918


Medical Dictionary

protactinium

play
noun prot·ac·tin·i·um \ˌprōt-ˌak-ˈtin-ē-əm\

Medical Definition of protactinium

  1. :  a shiny metallic radioelement of relatively short life—symbol Pa; see element table



Variants of protactinium

also

protoactinium

\ˌprōt-ō-\play

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