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
Example Sentences
Recent Examples on the Web The deuterium and tritium fuel model is also common, but tritium is extremely rare and must be specially created from lithium for ITER. 
Caroline Delbert, Popular Mechanics, 11 Aug. 2022 Urey, of course, was a Nobel Prize-winning scientist who discovered the isotopes of hydrogen, like deuterium, and so on. Quanta Magazine, 1 June 2022 The Nuclear Regulatory Commission will also halt general licenses for exports of source material, special material, byproduct material and deuterium to Russia. Courtney Subramanianstaff Writer, Los Angeles Times, 8 May 2022 The 50 million watts is only the power supplied directly to the deuterium and tritium fuel. Don Lincoln, CNN, 11 Feb. 2022 Set up to reflect the design of ITER, and with the mix of deuterium and tritium fuel that will be used there, JET made the largest sustained fusion reaction yet. John Timmer, Ars Technica, 9 Feb. 2022 Unfortunately, the heated deuterium makes its own magnetic fields, which interfere with the force fields. Don Lincoln, CNN, 11 Feb. 2022 According to Daly, the Sun has very low levels of heavy hydrogen called deuterium. Joshua Hawkins, BGR, 7 Dec. 2021 In theory, deuterium can be obtained from Earth's oceans; one liter of seawater is estimated to have enough fusion material to produce energy equivalent to 300 liters of gasoline, Newsweek reports. Elizabeth Gamillo, Smithsonian Magazine, 10 Jan. 2022 See More
Caroline Delbert, Popular Mechanics, 11 Aug. 2022 Urey, of course, was a Nobel Prize-winning scientist who discovered the isotopes of hydrogen, like deuterium, and so on. Quanta Magazine, 1 June 2022 The Nuclear Regulatory Commission will also halt general licenses for exports of source material, special material, byproduct material and deuterium to Russia. Courtney Subramanianstaff Writer, Los Angeles Times, 8 May 2022 The 50 million watts is only the power supplied directly to the deuterium and tritium fuel. Don Lincoln, CNN, 11 Feb. 2022 Set up to reflect the design of ITER, and with the mix of deuterium and tritium fuel that will be used there, JET made the largest sustained fusion reaction yet. John Timmer, Ars Technica, 9 Feb. 2022 Unfortunately, the heated deuterium makes its own magnetic fields, which interfere with the force fields. Don Lincoln, CNN, 11 Feb. 2022 According to Daly, the Sun has very low levels of heavy hydrogen called deuterium. Joshua Hawkins, BGR, 7 Dec. 2021 In theory, deuterium can be obtained from Earth's oceans; one liter of seawater is estimated to have enough fusion material to produce energy equivalent to 300 liters of gasoline, Newsweek reports. Elizabeth Gamillo, Smithsonian Magazine, 10 Jan. 2022 See More Word History
Etymology
New Latin, from Greek deuteros second
First Known Use
1933, in the meaning defined above
Phrases Containing deuterium
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