deuterium
noun
deu·te·ri·um
dü-ˈtir-ē-əm 
also dyü-
: an isotope of hydrogen that has one proton and one neutron in its nucleus and that has twice the mass of ordinary hydrogen
—symbol D
called also heavy hydrogen
Examples of deuterium in a Sentence
Recent Examples on the Web
Most fusion projects are based on fusing two heavy hydrogen isotopes deuterium and tritium, while others are looking at what is known as aneutronic fusion using proton-boron or helium-3 fusion.
—
David Szondy, New Atlas, 8 July 2024
This would necessitate an extended shutdown after initial experiments before the reactor could be used at progressively higher energies, using more potent deuterium and deuterium/tritium plasmas.
—John Timmer, Ars Technica, 5 July 2024
These require heavy forms of hydrogen—deuterium and tritium—for the fusion stage of the device, which is triggered by a plutonium or uranium fission bomb.
—Siegfried S. Hecker, Foreign Affairs, 4 Dec. 2017
North Korea has demonstrated the ability to produce deuterium and tritium, as well as a lithium compound, Lithium-6 deuteride, which can produce tritium in situ in the fusion stage of a hydrogen bomb’s detonation.
—Siegfried S. Hecker, Foreign Affairs, 4 Dec. 2017
See all Example Sentences for deuterium 
David Szondy, New Atlas, 8 July 2024
This would necessitate an extended shutdown after initial experiments before the reactor could be used at progressively higher energies, using more potent deuterium and deuterium/tritium plasmas.
—John Timmer, Ars Technica, 5 July 2024
These require heavy forms of hydrogen—deuterium and tritium—for the fusion stage of the device, which is triggered by a plutonium or uranium fission bomb.
—Siegfried S. Hecker, Foreign Affairs, 4 Dec. 2017
North Korea has demonstrated the ability to produce deuterium and tritium, as well as a lithium compound, Lithium-6 deuteride, which can produce tritium in situ in the fusion stage of a hydrogen bomb’s detonation.
—Siegfried S. Hecker, Foreign Affairs, 4 Dec. 2017
See all Example Sentences for deuterium
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“Deuterium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deuterium. Accessed 26 Jul. 2024.
Copy CitationKids Definition
deuterium
noun
deu·te·ri·um
d(y)ü-ˈtir-ē-əm
: the hydrogen isotope that is twice the mass of ordinary hydrogen
called also heavy hydrogen
Medical Definition
deuterium
noun
deu·te·ri·um
d(y)ü-ˈtir-ē-əm
: an isotope of hydrogen that has one proton and one neutron in its nucleus and that has twice the mass of ordinary hydrogen
called also heavy hydrogen
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