tritium rit"i*um (tr[i^]t"[i^]*[u^]m), n. (Chem.) A radioactive isotope of hydrogen having one proton and two neutrons in the nucleus. It decays spontaneously to Helium-3 by the emission of an electron (beta ray), with a half-life of 12.3 years. Symbol 1H3. Atomic weight 3.01605 (C-12 = 12.0000). It is one of the radioisotopes commonly used to label chemical compounds for use as tracers in biochemistry and chemistry. It is also used as one of the fusionable components of a hydrogen bomb. [PJC]

The Collaborative International Dictionary of English. 2000.

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  • tritium — [ tritjɔm ] n. m. • 1937; du gr. tritos « troisième », d apr. deutérium ♦ Chim. Isotope radioactif de l hydrogène (symb. T, 3H), dont la vie moyenne est de 12,26 années et qui donne l isotope 3 de l hélium. Noyau de tritium. ⇒ 3. triton. Le… …   Encyclopédie Universelle

  • tritium — tritium. См. тритий. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Tritĭum — Tritĭum, drei Städte im Tarraconensischen Spanien, welche beim j. Monasterio, Motrico u. Tricio lagen …   Pierer's Universal-Lexikon

  • Tritium — (Т) Тритий «тяжелый» изотоп водорода с атомной массой 3. Термины атомной энергетики. Концерн Росэнергоатом, 2010 …   Термины атомной энергетики

  • TRITIUM — quod Tuboricum Ptolem. Tobolicum Pompon. l. 3. c. 1. oppid. Hispaniae Tarraconens. infinib. Vardulorum; Mondragon hodie, teste Hen. Coquô, Brietio est Placentia, urbecula Ipuscoae, ad Devam fluv. 4. leuc. infra oppid. Mondragon in Boream versus… …   Hofmann J. Lexicon universale

  • tritium — TRÍTIUM s.n. v. tritiu. Trimis de LauraGellner, 13.09.2007. Sursa: DN …   Dicționar Român

  • tritium — 1933, Mod.L., from Gk. tritos “third” (see THIRD (Cf. third)) + chemical suffix ium …   Etymology dictionary

  • tritium — [trit′ē əm] n. [ModL < Gr tritos,THIRD + IUM] 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 …   English World dictionary

  • Tritium — Pour les articles homonymes, voir Tritium Calcio 1908 . Tritium (Hydrogène 3) table Général Nom, Symbole tritium …   Wikipédia en Français

  • Tritium — Infobox isotope background = #ffcccc text color = isotope name = Hydrogen 3 alternate names = tritium, triton mass number = 3 symbol = H num neutrons = 2 num protons = 1 abundance = trace halflife = 4500±8 days decay mode1 = Beta emission decay… …   Wikipedia

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