protium
noun
pro·ti·um
ˈprō-tē-əm 
ˈprō-shē-
: the ordinary light hydrogen isotope of atomic mass 1
Examples of protium in a Sentence
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In research published in the journal Science, the Manchester researchers used the graphene as a sieve to sort protium, the lightest stable isotope of hydrogen, from deuterium, which, unlike protium, contains a neutron in its nucleus.
—
IEEE Spectrum, 5 Jan. 2016
The fuel sources are far better than protium, but the extra neutrons are sprayed around and can cause problems.
—Caroline Delbert, Popular Mechanics, 16 Feb. 2022
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IEEE Spectrum, 5 Jan. 2016
The fuel sources are far better than protium, but the extra neutrons are sprayed around and can cause problems.
—Caroline Delbert, Popular Mechanics, 16 Feb. 2022
Cite this Entry
“Protium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protium. Accessed 20 Jul. 2025.
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protium
noun
pro·ti·um
ˈprōt-ē-əm
ˈprō-shē-
ˈprō-shē-
: the ordinary light hydrogen isotope of atomic mass 1
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