tritium

[trit-ee-uh m, trish-, trish-uh m]
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noun Chemistry.

an isotope of hydrogen having an atomic weight of three.

Nearby words

  1. tritheism,
  2. trithing,
  3. tritiate,
  4. triticale,
  5. triticum,
  6. tritoma,
  7. triton,
  8. triton tumor,
  9. tritone,
  10. tritonia

Origin of tritium

1930–35; < New Latin < Greek trít(os) third (tri- tri- + -tos adj. suffix) + New Latin -ium -ium

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tritium

  • Wanted to trade all the tritium we'd need to blow up a planet just for trees; because they worshipped trees!



British Dictionary definitions for tritium

tritium

noun

a radioactive isotope of hydrogen, occurring in trace amounts in natural hydrogen and produced in a nuclear reactor. Tritiated compounds are used as tracers. Symbol: T or ³H; half-life: 12.5 years

Word Origin for tritium

C20: New Latin, from Greek tritos third

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for tritium

tritium

n.

1933, Modern Latin, from Greek tritos "third" (see third) + chemical suffix -ium.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for tritium

tritium

[trĭtē-əm, trĭshē-]

n. Symbol T

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.hydrogen-3

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for tritium

tritium

[trĭtē-əm, trĭshē-əm]

A radioactive isotope of hydrogen whose nucleus has one proton and two neutrons with atomic mass of about 3 and a half life of 12.5 years. Tritium is rare in nature but can be made artificially in nuclear reactions. It is used in thermonuclear weapons and luminescent paints, and sometimes as a tracer. See more at hydrogen.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.