deu·te·ri·um (d -tîr  - m, dy-)n. An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.014. [deuter(o)- + -ium.] |
deuterium [djuːˈtɪərɪəm]
n
(Chemistry / Elements & Compounds) a stable isotope of hydrogen, occurring in natural hydrogen (156 parts per million) and in heavy water: used as a tracer in chemistry and biology. Symbol: D or 2H; atomic no.: 1; atomic wt.: 2.014; boiling pt.: -249.7°C.
[New Latin; see deutero-, -ium; from the fact that it is the second heaviest hydrogen isotope]
| deuterium (d-tîr-m) An isotope of hydrogen whose nucleus has one proton and one neutron and whose atomic mass is 2. Deuterium is used widely as a tracer for analyzing chemical reactions, and it combines with oxygen to form heavy water. Also called heavy hydrogen. See Note at heavy water. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | deuterium - an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen) isotope - one of two or more atoms with the same atomic number but with different numbers of neutrons hydrogen atom - an atom of hydrogen |
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