Noun
Definitions1. A colorless unstable toxic gas with a pungent odor and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet light. Its molecules consist of three oxygen atoms.
2. A layer in the earths stratosphere at an altitude of about 10 km (6.2 miles) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
PronunciationsUS: /ˈoʊzoʊn/
UK: /ˈəʊzəʊn/
Origin and UsageThe word "ozone" was first coined in 1840 by Christian Friedrich Schönbein, a German-Swiss chemist. It comes from the Greek word "ozein" which means "to smell". Ozone is used in various industrial applications, such as water treatment, air purification, and as a disinfectant. It is also used in medicine to treat certain conditions, such as herniated discs and joint pain.
SynonymsTriatomic oxygen, trioxygen
Related WordsOxide, odour, onion, olive, opium
Example Sentences