Tritium
//ˈtɹɪt.i.əm// noun
noun ·Uncommon ·Advanced level
Definitions
Noun
- 1 A radioactive isotope of the element hydrogen (symbol T, ³H or ³₁H) having one proton and two neutrons. countable, uncountable
- 2 a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms wordnet
- 3 An atom of this isotope. countable, uncountable
"Electrochemical polymerization of the 1,2-tritiated monomer produced a polymer in which all of the tritiums were eliminated except for those located at the ends of the chains"
Example
More examples"Scientists from the Lawrence Livermore National Laboratory report they were able to create a type of fusion reaction by bombarding a microscopic pellet of fuel with beams from 192 powerful lasers to compress its component parts — hydrogen isotopes known as deuterium and tritium — and fuse them together at the atomic level."
Etymology
Borrowed from New Latin tritium, from Ancient Greek τρίτος (trítos, “third”) + New Latin -ium.
Related phrases
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.