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dihydrogen monoxide

Syllables: di·hy·dro·gen mon·ox·ideUK/daɪˈhaɪdɹədʒ(ə)n məˈnɒksaɪd/US/daɪˈhaɪdɹədʒən məˈnɑkˌsaɪd/

dihydrogen monoxide noun: h₂O, water.

Noun

dihydrogen monoxide (uncountable)

  1. (humorous, usually) H₂O, water.
    • Thus ice contracts when melting, ice being a regular and rather open structure of hydrogen and oxygen atoms, while water is a collection of dihydrogen-monoxide (H₂O), tetra-hydrogen dioxide (2H₂O), and more complex molecules.1928, Herbert Chatley, Studies in Molecular Force, 3rd edition, Charles Griffin & Co., Limited, page 4
    • The Invisible Killer Dihydrogen monoxide is colorless, odorless, tasteless, and kills uncounted thousands of people every year. Most of these deaths are caused by accidental inhalation of DHMO, but the dangers of dihydrogen monoxide do not end there.1995, John December, quoting Craig Jackson, The World Wide Web Unleashed, 2nd edition, Indianapolis, Ind.: Sams.net, →ISBN, page 450

dihydrogen monoxide meaning in Thai and Vietnamese

dihydrogen monoxide in Thai

water, H₂O — see also water
ไดไฮโดรเจนมอนอกไซด์ dai-hai-droo-jên-mɔɔ-nɔ́k-saai

dihydrogen monoxide in Vietnamese

water, H₂O — see also water
đihiđro monoxit

Examples of dihydrogen monoxide in a sentence

  • There was no point in buying bottled water, he said, dihydrogen monoxide would be in there too, although you could get rid of it by boiling your water for long enough.1997, Chemistry and Industry, London: Society of Chemical Industry, →ISSN, →OCLC, page 741, column 2:
  • One-by-one the warning fliers turned up in mailboxes around Wylie Heights in North Sewickley, Beaver County: It advised, there is a chemical in your water supply called dihydrogen monoxide.1997 April 19, Dennis B[rian Patrick] Roddy, “Internet-inspired prank lands 4 teens in hot water”, in Pittsburgh Post-Gazette, volume 70...
  • Many people have joined the cause to ban this substance without realizing that dihydrogen monoxide is simply water (H₂O).2007, Michael Sullivan, III, Statistics: Informed Decisions Using Data, 2nd edition, Upper Saddle River, N.J.: Pearson Prentice Hall...

Synonyms of dihydrogen monoxide

6 more synonymsFewer synonyms

Questions about dihydrogen monoxide

What does dihydrogen monoxide mean?
Dihydrogen monoxide means h₂O, water.
What is dihydrogen monoxide in Thai?
Dihydrogen monoxide in Thai is ไดไฮโดรเจนมอนอกไซด์ (dai-hai-droo-jên-mɔɔ-nɔ́k-saai). See Dihydrogen monoxide meaning in Thai.
How do you use dihydrogen monoxide in a sentence?
There was no point in buying bottled water, he said, dihydrogen monoxide would be in there too, although you could get rid of it by boiling your water for long enough.
What part of speech is dihydrogen monoxide?
Dihydrogen monoxide is a noun.
How do you pronounce dihydrogen monoxide?
Dihydrogen monoxide is pronounced /daɪˈhaɪdɹədʒ(ə)n məˈnɒksaɪd/ (UK).

Words near dihydrogen monoxide in the dictionary

  1. dihydrofurano
  2. dihydrofurans
  3. dihydrofuranyl
  4. dihydrofusarubin
  5. dihydrogen
  6. dihydrogen monoxide
  7. dihydrogen-monoxide
  8. dihydrogenated
  9. dihydrogenmonoxide
  10. dihydroheterocodeine
  11. dihydrohydroxyfuran

Source and license

Adapted from Wiktionary: dihydrogen monoxide (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: en-au-dihydrogen monoxide.ogg.

Cite this entry: “dihydrogen monoxide.” Word.ws, https://word.ws/dihydrogen_monoxide. Based on Wiktionary, CC BY-SA 4.0.