| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024o•zo•nous (ō′zə nəs, ō′zō-),USA pronunciation adj. - Chemistryof or containing ozone.
WordReference Random House Learner's Dictionary of American English © 2024o•zone /ˈoʊzoʊn/USA pronunciation n. [uncountable]- Chemistrya form of oxygen, O3, produced when ultraviolet light passes through air or oxygen.
- Meteorologyozone layer.
WordReference Random House Unabridged Dictionary of American English © 2024o•zone (ō′zōn, ō zōn′),USA pronunciation n. - Chemistry, Meteorologya form of oxygen, O3, with a peculiar odor suggesting that of weak chlorine, produced when an electric spark or ultraviolet light is passed through air or oxygen. It is found in the atmosphere in minute quantities, esp. after a thunderstorm, is a powerful oxidizing agent, and is thus biologically corrosive. In the upper atmosphere, it absorbs ultraviolet rays, thereby preventing them from reaching the surface of the earth. It is used for bleaching, sterilizing water, etc.
- Greek ózōn, present participle of ózein to smell; see ozo-
- German Ozon
Collins Concise English Dictionary © HarperCollins Publishers:: ozone /ˈəʊzəʊn; əʊˈzəʊn/ n - a colourless gas with a chlorine-like odour, formed by an electric discharge in oxygen: a strong oxidizing agent, used in bleaching, sterilizing water, purifying air, etc. Formula: O3; density: 2.14 kg/m³; melting pt: –192°C; boiling pt: –110.51°C
Technical name: trioxygen - informal clean bracing air, as found at the seaside
Etymology: 19th Century: from German Ozon, from Greek: smellozonic /əʊˈzɒnɪk/, ˈozonous adj |