tritiumn.

Brit.

/ˈtrɪtɪəm/, U.S.

/ˈtrɪdiəm/

Etymology: modern Latin, < Greek τρίτος third + -ium suffix.

Chemistry.

A radioactive heavy isotope of hydrogen, having two neutrons as well as a proton in the nucleus, which constitutes one part in 10¹⁸ of the naturally occurring element and is produced for use in fusion reactors and as an isotopic label. Symbols ³H (H³), T. Cf. deuterium n., protium n.

ΘΚΠ

the world > matter > chemistry > elements and compounds > hydrogen > [noun] > isotopes

D1933

deuterium1933

diplogen1933

protium1933

tritium1933

T1948

the world > matter > physics > atomic nucleus > radioactive isotope > [noun] > heavy isotope of hydrogen

tritium1933

the world > matter > physics > atomic nucleus > radioactive isotope > radioactive label > [noun] > isotope used as tracer

indicator1919

tritium1933

radiophosphorus1934

the world > matter > physics > atomic nucleus > nuclear fission > nuclear fusion > [noun] > fusion reactor > isotope used in

tritium1959

1933 Urey & Murphy in Jrnl. Chem. Physics I. 513/2 If the H³ isotope is discovered, we would recommend to the discoverer the consideration of the name tritium for it.

1959 Sci. News 51 12 ³He is obtained from the decay of tritium which in turn is the product of nuclear reactions involving neutrons from a reactor.

1962 L. Deighton Ipcress File xviii. 107 Tritium is also called super-heavy hydrogen.

1972 Sci. Amer. Oct. 104/3 Large amounts of tritium (hydrogen 3)..are stockpiled for nuclear weapons and for research in fusion power.

1976 Nature 9 Sept. 103/1 Tritium (t½ = 12·3 yr) is present on the Earth's surface mainly as HTO.

Compounds

attributive and in other combinations.

ΘΚΠ

the world > matter > physics > atomic nucleus > radioactive isotope > [adjective] > relating to tritium

tritium1934

1934 Sun (Baltimore) 6 Oct. 20/6 Tritium water could be formed by the addition of two more atoms of hydrogen to the heavy water.

1953 J. Blish in E. Crispin Best SF (1955) 345 The U.N.'s police would be glad to know that they could have access to a virtually inexhaustible stock of tritium bombs.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XIV. 113/1 Tritium oxide, T₂O, has been prepared by oxidation of tritium gas with hot copper oxide.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XIV. 113/2 Tritium-labeled compounds may be prepared by ordinary synthetic chemical methods.

1979 McGraw-Hill Yearbk. Sci. & Technol. 153/2 Tritium-helium dating will eventually prove very useful in studying those physical processes which transport or redistribute substances in oceans.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).

单词	tritium
释义	tritiumn. Brit. /ˈtrɪtɪəm/, U.S. /ˈtrɪdiəm/ Etymology: modern Latin, < Greek τρίτος third + -ium suffix. Chemistry. A radioactive heavy isotope of hydrogen, having two neutrons as well as a proton in the nucleus, which constitutes one part in 10¹⁸ of the naturally occurring element and is produced for use in fusion reactors and as an isotopic label. Symbols ³H (H³), T. Cf. deuterium n., protium n. ΘΚΠ the world > matter > chemistry > elements and compounds > hydrogen > [noun] > isotopes D1933 deuterium1933 diplogen1933 protium1933 tritium1933 T1948 the world > matter > physics > atomic nucleus > radioactive isotope > [noun] > heavy isotope of hydrogen tritium1933 the world > matter > physics > atomic nucleus > radioactive isotope > radioactive label > [noun] > isotope used as tracer indicator1919 tritium1933 radiophosphorus1934 the world > matter > physics > atomic nucleus > nuclear fission > nuclear fusion > [noun] > fusion reactor > isotope used in tritium1959 1933 Urey & Murphy in Jrnl. Chem. Physics I. 513/2 If the H³ isotope is discovered, we would recommend to the discoverer the consideration of the name tritium for it. 1959 Sci. News 51 12 ³He is obtained from the decay of tritium which in turn is the product of nuclear reactions involving neutrons from a reactor. 1962 L. Deighton Ipcress File xviii. 107 Tritium is also called super-heavy hydrogen. 1972 Sci. Amer. Oct. 104/3 Large amounts of tritium (hydrogen 3)..are stockpiled for nuclear weapons and for research in fusion power. 1976 Nature 9 Sept. 103/1 Tritium (t½ = 12·3 yr) is present on the Earth's surface mainly as HTO. Compounds attributive and in other combinations. ΘΚΠ the world > matter > physics > atomic nucleus > radioactive isotope > [adjective] > relating to tritium tritium1934 1934 Sun (Baltimore) 6 Oct. 20/6 Tritium water could be formed by the addition of two more atoms of hydrogen to the heavy water. 1953 J. Blish in E. Crispin Best SF (1955) 345 The U.N.'s police would be glad to know that they could have access to a virtually inexhaustible stock of tritium bombs. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XIV. 113/1 Tritium oxide, T₂O, has been prepared by oxidation of tritium gas with hot copper oxide. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) XIV. 113/2 Tritium-labeled compounds may be prepared by ordinary synthetic chemical methods. 1979 McGraw-Hill Yearbk. Sci. & Technol. 153/2 Tritium-helium dating will eventually prove very useful in studying those physical processes which transport or redistribute substances in oceans. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022). < n.1933
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