heavy water

heavy water
heavy water n
1) the compound D2O composed of deuterium and oxygen called also deuterium oxide
2) water having a higher-than-usual proportion of deuterium among its hydrogen atoms

* * *

a compound analogous to water but containing deuterium, the mass two isotope of hydrogen, the formula being D2O or 2H2O. It differs from ordinary water in having a higher freezing point (3.8°C) and boiling point (101.4°C), and in the fact that it is incapable of supporting life. It is the stable isotope used as a moderator in nuclear reactors. Called also deuterium oxide.

Medical dictionary. 2011.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • heavy water — water in which hydrogen atoms have been replaced by deuterium, used chiefly as a coolant in nuclear reactors. Also called deuterium oxide. [1930 35] * * * or deuterium oxide Water composed of two atoms of deuterium (D; a heavy isotope of… …   Universalium

  • Heavy water —   Water containing a significantly greater proportion of heavy hydrogen (deuterium) atoms to ordinary hydrogen atoms than is found in ordinary (light) water. Heavy water is used as a moderator in some reactors because it slows neutrons… …   Energy terms

  • heavy water — n. water composed of heavy isotopes of hydrogen or oxygen, or of both; esp., deuterium oxide, D2O, which is water composed of ordinary oxygen and deuterium …   English World dictionary

  • Heavy water — См. Тяжелая вода Термины атомной энергетики. Концерн Росэнергоатом, 2010 …   Термины атомной энергетики

  • Heavy water — Not to be confused with hard water or tritiated water. Deuterium oxide IUPAC name …   Wikipedia

  • heavy water — noun water containing a substantial proportion of deuterium atoms, used in nuclear reactors • Syn: ↑deuterium oxide • Hypernyms: ↑moderator * * * ˈheavy water 7 [heavy water] noun …   Useful english dictionary

  • heavy water — sunkusis vanduo statusas T sritis chemija formulė D₂O atitikmenys: angl. heavy water rus. тяжелая вода …   Chemijos terminų aiškinamasis žodynas

  • heavy water — sunkusis vanduo statusas T sritis fizika atitikmenys: angl. heavy water vok. schweres Wasser, n; Schwerwasser, n rus. тяжёлая вода, f pranc. eau lourde, f …   Fizikos terminų žodynas

  • heavy water — sunkusis vanduo statusas T sritis apsauga nuo naikinimo priemonių apibrėžtis D₂o, vanduo, kuriame vietoje paprastų vandenilio atomų yra sunkieji vandenilio izotopai – deuterio atomai. Sunkiojo vandens tankis 1,104 g/cm³, lydymosi temperatūra… …   Apsaugos nuo naikinimo priemonių enciklopedinis žodynas

  • heavy water — sunkusis vanduo statusas T sritis ekologija ir aplinkotyra apibrėžtis Deuterio oksidas (D₂O) – bespalvis skystis, kuriame vietoje paprastų vandenilio atomų yra sunkieji vandenilio izotopai – deuterio atomai. Jame lėčiau vyksta cheminės reakcijos …   Ekologijos terminų aiškinamasis žodynas

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”