heavywater

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A form of heavy water — Water containing deuterium instead of normal hydrogen (protium) (thus, ²H₂O); used as a moderator in nuclear reactors.

Scrabble 22
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Meanings

nounheavywater (uncountable)
  1. alternativeattributiveuncountableAlternative form of heavy water.

    In it he told me that he was working close to a factory involved in the production of heavywater.

    1975, Charles Whiting, chapter 7, in The Destroyers: Operation Kill Ike, London: Sphere Books Limited, →ISBN, page 35

Origin

From heavy + water.

Full word history & related roots →
Cite this entry
APA

heavywater. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/heavywater

MLA

“heavywater.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/heavywater. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “heavywater,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/heavywater.

Source: heavywater on Wiktionary, CC BY-SA 4.0.