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heavy water
(redirected from Heavy water (D2O))

    Also found in: Medical, Wikipedia, Hutchinson 0.10 sec.
heavy water: see deuterium deuterium (dtēr`ēəm), isotope of hydrogen with mass no. 2.
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heavy water

 or deuterium oxide

Water composed of two atoms of deuterium (D; a heavy isotope of hydrogen) and one atom of oxygen (O), chemical formula D2O. Water from most natural sources contains about 0.015% deuterium oxide; this can be enriched or purified by distillation, electrolysis, or chemical processing. Heavy water is used as a moderator in nuclear power plants, slowing down the fast neutrons so that they can react with the fuel in the reactor. Heavy water is also used in research as an isotopic tracer for chemical reactions and biochemical pathways. Water with tritium (T2O) rather than deuterium may also be called heavy water.

heavy water
water that has been electrolytically decomposed to enrich it in the deuterium isotope in the form HDO or D2O - PLEASE CHECK FORMULA


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