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tritium Definition

trit·ium (tritē əm)

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.

Etymology: ModL < Gr tritos, third + -ium

tritium Usage Examples

Converse of object

  • produce: The United States has recently announced its intention of using a civilian nuclear energy plant to produce tritium for the military.
  • contain: It also had requirements for handling, applying, and disposing of Tritium, and watches containing Tritium.
  • exclude: Note B: Excluding tritium, potassium-40, radon, and radon decay products.
  • have: The subsidiary seconds are at 9. It still has bright tritium luminous dial markings.

Adjective modifier

  • total: No specific standard radioactivity total indicative dose tritium Anglian Water supplies have been assessed as very low risk.

Modifies a noun

  • gas: The luminous dial illumination for night navigation uses Tritium gas.
  • production: Tritium production, halted for fifteen years, is to restart this year.
  • level: Tritium levels in waters off site intermittently exceed World Health Organization drinking water limits.
  • beta: Gordon et al. reports tritium beta efficiencies of 27 % for devices having large 1mm 2 pixels.
  • experiment: From tritium decay experiments comes an upper limit of 2.2 eV for the electron neutrino.
  • standard: Figure 1 shows an image of the tritium standard accumulated in 20 hours.

Preposition: in

  • fish: Levels of tritium in fish caught in the Severn Estuary near the plant were hundreds of times higher than expected.

Browse dictionary entries near tritium

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