protium

noun
pro·​ti·​um | \ ˈprō-tē-əm How to pronounce protium (audio) , ˈprō-shē- \

Definition of protium

: the ordinary light hydrogen isotope of atomic mass 1

First Known Use of protium

1933, in the meaning defined above

History and Etymology for protium

New Latin, from Greek prōtos first

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The first known use of protium was in 1933

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Cite this Entry

“Protium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protium. Accessed 18 Jan. 2021.

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More Definitions for protium

protium

noun
pro·​ti·​um | \ ˈprōt-ē-əm How to pronounce protium (audio) , ˈprō-shē- How to pronounce protium (audio) \

Medical Definition of protium

: the ordinary light hydrogen isotope of atomic mass 1

More from Merriam-Webster on protium

Britannica.com: Encyclopedia article about protium

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