Dictionary

protactinium

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

Definition of PROTACTINIUM

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

Origin of PROTACTINIUM

New Latin
First Known Use: 1918

protactinium

noun prot·ac·tin·i·um \ˌprōt-ˌak-ˈtin-ē-əm\   (Medical Dictionary)

Medical Definition of PROTACTINIUM

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

Variants of PROTACTINIUM

prot·ac·tin·i·um also pro·to·ac·tin·i·um \ˌprōt-ō-\

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May 30, 2015
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