Hydrogen-3, an isotope of hydrogen. Tritium is a long-lived weak emitter of radiation and can be easily incorporated in large molecules such as DNA, and is therefore much used for autoradiography in the laboratory.

A radioisotope of hydrogen with two neutrons and one proton in its nucleus.

a radiocative isotope of hydrogen

Radioactive isotope of hydrogen with two neutrons and a proton in the nucleus. Tritium is used e.g. in the manufacture of luminous paint, as an indicator in tracer tests and as a fuel in controlled fu [..]

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

A radioactive isotope of hydrogen. Because it is chemically identical to natural hydrogen, tritium can easily be taken into the body by any ingestion path. It decays by emitting beta particles and has a half-life of about 12.5 years. For related information, see the Fact Sheet on Tritium, Radiation Protection Limits, and Drinking Water Standards.

A radioactive isotope of hydrogen having a mass of 3 units; it is produced in nuclear reactors by the action of neutrons on lithium nuclei.

The night sights on some guns and other weapons use radioactive tritium-based paint. The electrons emitted as the tritium decays interact with the phospor paint, producing a bright greenish light." > The night sights on some guns and other weapons use radioactive tritium-based paint. The electr [..]

The isotope of hydrogen of atomic mass of three (hydrogen-3). It is very rare, naturally radioactive, but can be made in a number of ways, including neutron absorption in a) lithium, b) deuterium, or c) heavy water.

(chemical symbol H-3) a radioactive isotope of the element hydrogen (chemical symbol H). See also deuterium.

A radioactive isotope of hydrogen. Tritium contains one proton and two neutrons in its nucleus. Because it is chemically identical to the natural hydrogen atoms present in water, tritium can easily be [..]

(n) a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms

A self-powered light source based on an isotope of Hydrogen used to make the markings on a watch dial legible in the dark. It is not a radiation hazard since it is a low energy beta emitter, but it has been superseded in most watches now by more natural pigments like Luminova. With a half life of just over 12 years, Tritium will slowly fade and be [..]

A slightly radioactive substance that collects light and is used to allow the hands or hour markers to glow in the dark. The radiation is so low that there is no health risk. Watches bearing tritium must be marked as such, with the letter T on the dial near 6 o’clock.

A radioactive isotope of hydrogen with two neutrons and one proton in the nucleus. It is heavier than deuterium (heavy hydrogen). Tritium is used in industrial thickness gages, as a label in tracer ex [..]

Illustrated Glossary of Organic Chemistry Tritium (3H; T): An isotope of hydrogen whose nucleus contains one proton and two neutrons. Commonly abbreviated as T, for example, in T2O (water containing t [..]

A radioactive form of hydrogen with a half-life of 12 years. It emits beta particles. It is used to mark chemical compounds so that the structure or chemical activity can be determined.  Also used in nuclear weapons research and construction.  Small amounts of tritium occur naturally, and some exists as a by-product of previous nuclear testing and [..]

Tritium is a radioactive form of hydrogen that is recognized as a carcinogen. It occurs naturally, but the major source in Ontario is from water and air emissions from nuclear energy plants operated by Ontario Power Generation Corporation.

A radioactive isotope of hydrogen.