ozone
(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.
Etymology timeline
Born ~1840 · 1 year of recorded useSeen in the wild
🟢 Detroit AQI: Particle Pollution (2.5 microns) at 42 (Good) – 2026-05-05 02:46 PM 🧪 🟢Particle Pollution (2.5 microns) 42 | 🟢Ozone 40 | 🟢Particle Pollution (10 microns) 14 🔗 planetdetroit.org/air-quality-...
Schönbein announced his discovery of ozone this month in 1840 in a letter to Faraday, read to the Royal Society. #Chemistry #ChemSky 🧪 You can read it here: www.jstor.org/stable/11069...
It so happens that this one is already labeled (Ozone UI view)
I do have receipts, and I do accept appeals. Every account is manually reviewed before labeling, except hammer-and--sickle in profile. The moderation service back-end, which is Bluesky's Ozone integrated to a custom s…
ICYMI: Southeast Michigan should be bumped from moderate to serious nonattainment for ozone pollution, attorney says. https://planetdetroit.org/2026/05/sierra-club-epa-detroit-ozone/
Definitions
(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.
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.
“🟢 Detroit AQI: Particle Pollution (2.5 microns) at 42 (Good) – 2026-05-05 02:46 PM 🧪 🟢Particle Pollution (2.5 microns) 42 | 🟢Ozone 40 | 🟢Particle Pollution (10 microns) 14 🔗 planetdetroit.org/air-quality-...”
— Bluesky· May 2026“Schönbein announced his discovery of ozone this month in 1840 in a letter to Faraday, read to the Royal Society. #Chemistry #ChemSky 🧪 You can read it here: www.jstor.org/stable/11069...”
— Bluesky· May 2026“It so happens that this one is already labeled (Ozone UI view)”
— Bluesky· May 2026“I do have receipts, and I do accept appeals. Every account is manually reviewed before labeling, except hammer-and--sickle in profile. The moderation service back-end, which is Bluesky's Ozone integrated to a custom software stack, contains the entire history.”
— Bluesky· May 2026“ICYMI: Southeast Michigan should be bumped from moderate to serious nonattainment for ozone pollution, attorney says. https://planetdetroit.org/2026/05/sierra-club-epa-detroit-ozone/”
— Bluesky· May 2026
Comments
(Britain, informal) Fresh air, especially that breathed at the seaside and smelling of seaweed.
Comments
(transitive) To treat with ozone.
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(organic chemistry) Any of a class of organic compound, cyclic ethers, having a three-membered ring; they are prepared by the selective oxidation of alkenes or by ring-closure of halohydrins; used to make plastics.
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Supplied or infused with air or oxygen.
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(chemistry, physics) The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.