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uncountable
(inorganic chemistry) An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a toxic gas, generated from oxygen by electrical discharge. quotations examples
Lightning flashed again, the thunder came a second later. It rained harder. The smell of ozone was strong. You could feel the charge in the air.
2018, Nnedi Okorafor, Who Fears Death, HarperVoyager, page 334
(Britain, informal) Fresh air, especially that breathed at the seaside and smelling of seaweed. quotations examples
A patent obtained in England, and specified far from clearly, for obtaining ozone by boiling seaweed,†† may be mentioned as a curiosity, and also the credulity with which ozone-baths, prepared in this manner, find a ready sale, in spite of, or perhaps rather on account of, their high price.
1875, William Crookes, The Chemical News, page 99
To Ramsgate baths she sped, in quest / Of seaweed and ozone ; / For seaweed and ozone were best, / They said, to give her tone.
1888, L. T. Meade, A. Balfour Symington, Edwin Oliver, Atalanta, volume 1, page 674
It's got the lot: fresh sea air, ozone, seaweed. You could cut the air with a knife.
2007, Robert Douglas, Tales of the Unexpected: Somewhere to Lay My Head, unnumbered page
third-person singular simple present ozones, present participle ozoning, simple past and past participle ozoned
(transitive) To treat with ozone. quotations examples
Whenever it exists, as it usually does, even where the tide water freshens at the ebb, it seems to have a purifying tendency, probably by ozoning the superincumbent atmosphere.
1868, Medical and Surgical Reporter, volume 19, page 392
I worked nonstop to make the house safe. Periodically I ozoned the first-floor bathroom, but it still made us sick.
1997, Robert Sampson, Patricia Hughes, Breaking Out of Environmental Illness