Definition of tritium

sustain Definition: (verb) to keep in existence or continue. Petersons.com

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< triticale

triton >

trit·i·um    (trt-m, trsh-) KEY  

NOUN:

A rare radioactive hydrogen isotope with atomic mass 3 and half-life 12.5 years, prepared artificially for use as a tracer and as a constituent of hydrogen bombs.

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ETYMOLOGY:
From Greek tritos, third; see trei- in Indo-European roots

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