tritium
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trit·i·um
(trĭt′ē-əm, trĭsh′ē-)n.
A rare radioactive isotope of hydrogen, H-3, having one proton and two neutrons in the nucleus and a half-life of 12.3 years, prepared artificially for use as a tracer and as a constituent of hydrogen bombs.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
tritium
(ˈtrɪtɪəm)n
(Elements & Compounds) 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
[C20: New Latin, from Greek tritos third]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
trit•i•um
(ˈtrɪt i əm, ˈtrɪʃ-, ˈtrɪʃ əm)n.
an isotope of hydrogen having an atomic weight of three.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
trit·i·um
(trĭt′ē-əm, trĭsh′ē-əm) A radioactive isotope of hydrogen whose nucleus has one proton and two neutrons and whose atomic mass is about 3. Tritium is rare in nature but can be made artificially in nuclear reactions. It is used in thermonuclear weapons and sometimes as a tracer. See more at hydrogen.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
tritium
An isotope of hydrogen. Its nucleus contains one proton and two neutrons and thus has a relative atomic mass of three.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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| Noun | 1. | tritium - a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms atomic number 1, H, hydrogen - a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe |
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tritium
tritium
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
tritium
n → Tritium nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007