heavy water

noun

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

Similar
deuterium oxidedeuterated water
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Meanings

nounheavy water (uncountable)

alternative heavywater · alternative heavy-water

  1. uncountablechemistryWater containing deuterium instead of normal hydrogen (protium) (thus, ²H₂O); used as a moderator in nuclear reactors.

    Synonyms: deuterium oxide, deuterated water

Synonyms & antonyms

nounWater containing deuterium instead of normal hydrogen (protium) (thus, ²H₂O); used as a moderator in nuclear reactors.

Similar
deuterium oxidedeuterated water

More synonyms by meaning

nounwater containing a substantial proportion of deuterium atoms, used in nuclear reactors

Similar
deuterium oxide
Broader
moderator
Also see
deuterium oxide

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Bulgarian тежка вода
  • тежка вода (težka voda)water containing deuterium instead of normal hydrogen
Chinese Mandarin 重水
  • 重水 (zhòngshuǐ)water containing deuterium instead of normal hydrogen
Danish tungt vand
  • tungt vandwater containing deuterium instead of normal hydrogen
Dutch zwaar water
  • zwaar waterwater containing deuterium instead of normal hydrogen
Finnish raskasvesi
  • raskasvesiwater containing deuterium instead of normal hydrogen
French eau lourde
  • eau lourdewater containing deuterium instead of normal hydrogen
German schweres Wasser
  • schweres Wasserwater containing deuterium instead of normal hydrogen
Icelandic þungt vatn
  • þungt vatnwater containing deuterium instead of normal hydrogen
Indonesian air berat
  • air beratwater containing deuterium instead of normal hydrogen
Italian acqua pesante
  • acqua pesantewater containing deuterium instead of normal hydrogen
Japanese 重水
  • 重水 (jūsui)water containing deuterium instead of normal hydrogen
Norwegian Bokmål tungtvann, tungtvatn
  • tungtvannwater containing deuterium instead of normal hydrogen
  • tungtvatnwater containing deuterium instead of normal hydrogen
Persian آب سنگین
  • آب سنگین (âb-e sangin)water containing deuterium instead of normal hydrogen
Polish ciężka woda
  • ciężka wodawater containing deuterium instead of normal hydrogen
Portuguese água pesada, água deuterada
  • água pesadawater containing deuterium instead of normal hydrogen
  • água deuteradawater containing deuterium instead of normal hydrogen
Romanian apă grea
  • apă greawater containing deuterium instead of normal hydrogen
Russian тяжёлая вода́
  • тяжёлая вода́ (tjažólaja vodá)water containing deuterium instead of normal hydrogen
Spanish agua pesada
  • agua pesadawater containing deuterium instead of normal hydrogen
Swedish tungt vatten
  • tungt vattenwater containing deuterium instead of normal hydrogen
Tagalog mabigat na tubig, tubig na mabigat
  • mabigat na tubigwater containing deuterium instead of normal hydrogen
  • tubig na mabigatwater containing deuterium instead of normal hydrogen
Turkish ağır su
  • ağır suwater containing deuterium instead of normal hydrogen
Vietnamese nước nặng
  • nước nặngwater containing deuterium instead of normal hydrogen
Cite this entry
APA

heavy water. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/heavy%20water

MLA

“heavy water.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/heavy%20water. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “heavy water,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/heavy%20water.

Source: heavy water on Wiktionary, CC BY-SA 4.0.