Meanings
- uncountableA solution of hydrogen peroxide and other compounds that is reputed to have health benefits.
For more mind-numbing claptrap, how about “all-natural liquid oxygen” drops under the tongue to fight jet lag, fatigue, hangover, and aging skin?
2014, Joe Schwarcz, Is That a Fact?: Frauds, Quacks, and the Real Science of Everyday Life, →ISBN3 more examples
Under the name of "compound oxygen" or "liquid oxygen," it has been used in its liquid form by quacks, and has been sold as a patent medicine ; and has cured some who had experienced no relief from treatment ordinarily adopted for such cases.
1880, St. Louis Courier of Medicine and Collateral SciencesTo boost oxygen supply for health recovery or immune system support at the onset of illness, try daily use of liquid oxygen. For use internally, the ratios given below (for hydrogen peroxide, originally) are conservative.
1999, Penelope Oaks Colville, The Multiversa Strategy, →ISBN, page 220This was not just another quack cure. This was on sale exclusively from the duty-free trolley on Continental Airlines. What was it? Liquid oxygen, that's what.
2008, New Scientist and Science Journal - Volume 199, Issues 2663-2670
Synonyms & antonyms
More synonyms by meaning
nouna bluish translucent magnetic liquid obtained by compressing gaseous oxygen and then cooling it below its boiling point; used as an oxidizer in rocket propellants
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
liquid oxygen. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/liquid%20oxygen
“liquid oxygen.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/liquid%20oxygen. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “liquid oxygen,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/liquid%20oxygen.
Source: liquid oxygen on Wiktionary, CC BY-SA 4.0.