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triskelion
trismus
trisoctahedron
trisodium
trisomy
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Tristan da Cunha
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triton (2)
tri·ton [ tr tòn ] (plural tri·tons)


noun 
Definition:
 
nucleus of tritium atom: the nucleus of a tritium atom, consisting of one proton and two neutrons
[Mid-20th century. <tritium]
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