tritium
noun
tri·ti·um
ˈtri-tē-əm 
ˈtri-shē-
ˈtri-shē-
: a radioactive isotope of hydrogen that has one proton and two neutrons in its nucleus and that has three times the mass of ordinary hydrogen
—symbol T
Examples of tritium in a Sentence
Recent Examples on the Web
The one most scientists prefer is deuterium plus tritium.
—
Sophie Blondel, The Conversation, 18 Oct. 2024
Siegfried Hecker, a former director of Los Alamos National Laboratory, believes the blasts included two uranium devices that would be suitable for tactical weapons, and one thermonuclear bomb that likely used tritium to boost its yield with a jolt of nuclear fusion.
—Byrichard Stone, science.org, 23 Sep. 2024
Researchers, working on nuclear fusion, are fusing tritium and deuterium together to maximize the amount of energy created in one small area.
—Abbott Swartz, Los Angeles Times, 15 Sep. 2024
This example uses a tritium dial and shows slight signs of age, while the case and bracelet are crisp with only superficial markings.
—Allen Farmelo, Robb Report, 4 Oct. 2024
See all Example Sentences for tritium 
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Sophie Blondel, The Conversation, 18 Oct. 2024
Siegfried Hecker, a former director of Los Alamos National Laboratory, believes the blasts included two uranium devices that would be suitable for tactical weapons, and one thermonuclear bomb that likely used tritium to boost its yield with a jolt of nuclear fusion.
—Byrichard Stone, science.org, 23 Sep. 2024
Researchers, working on nuclear fusion, are fusing tritium and deuterium together to maximize the amount of energy created in one small area.
—Abbott Swartz, Los Angeles Times, 15 Sep. 2024
This example uses a tritium dial and shows slight signs of age, while the case and bracelet are crisp with only superficial markings.
—Allen Farmelo, Robb Report, 4 Oct. 2024
See all Example Sentences for tritium
Dictionary Entries Near tritium
Cite this Entry
“Tritium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tritium. Accessed 8 Nov. 2024.
Copy CitationKids Definition
tritium
noun
tri·ti·um
ˈtrit-ē-əm
ˈtrish-ē-
ˈtrish-ē-
: a rare radioactive form of hydrogen having atoms with three times the mass of ordinary light hydrogen atoms
Medical Definition
tritium
noun
tri·ti·um
ˈtrit-ē-əm
ˈtrish-ē-
ˈtrish-ē-
: a radioactive isotope of hydrogen that has three times the mass of ordinary hydrogen
—symbol T
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