Dictionary

protium

noun pro·ti·um \ˈprō-tē-əm, ˈprō-shē-\

Definition of PROTIUM

:  the ordinary light hydrogen isotope of atomic mass 1
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Origin of PROTIUM

New Latin, from Greek prōtos first
First Known Use: 1933
Medical Dictionary

protium

noun pro·ti·um \ˈprōt-ē-əm, ˈprō-shē-\

Medical Definition of PROTIUM

:  the ordinary light hydrogen isotope of atomic mass 1

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