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Tristram and Isolde
trisulfide
trisyllable
tritanopia
trite
tritheism
tritiate
triticale
tritium
Triton
triton (1)
triton (2)
tritone
triturate
trituration
triumph
triumphal
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tritium

trit·i·um [ tríttee əm ]


noun 
Definition:
 
radioactive isotope of hydrogen: a radioactive isotope of hydrogen occurring naturally in trace amounts and having atomic mass 3 and a half-life of 12.3 years. Although rare in nature, it can be produced artificially and is used in tracers and hydrogen bombs.
Symbol  T


[Mid-20th century. < modern Latin< Greek tritos "third"]
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