Tritium Definition
trĭtē-əm, trĭshē-
noun
A radioactive isotope of hydrogen having an atomic weight of 3 and a half-life of c. 12.5 years: it decays by beta-particle emission and is used in thermonuclear bombs, thermonuclear fusion devices, as a radioactive tracer, etc.
Webster's New World
An atom of this isotope.
Wiktionary
Other Word Forms of Tritium
Noun
Singular:
tritium
Plural:
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