heavy water


heavy water

noun

Definition of HEAVY WATER

1
:  the compound D2O composed of deuterium and oxygen —called also deuterium oxide
2
:  water enriched in deuterium

First Known Use of HEAVY WATER

1933

heavy water

noun    (Medical Dictionary)

Medical Definition of HEAVY WATER

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

heavy water

noun    (Concise Encyclopedia)

Water composed of two atoms of deuterium (D; a heavy isotope of hydrogen) and one atom of oxygen (O), chemical formula DO. 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 (TO) rather than deuterium may also be called heavy water.

Variants of HEAVY WATER

heavy water or deuterium oxide

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