| Definitions | | ozone |
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noun
- (chemistry) An allotrope of oxygen (symbol O3) having three atoms in the molecule instead of the usual two; it is a blue gas, generated from oxygen by electrical discharge; it is poisonous and highly reactive, but in the upper atmosphere it protects life on Earth from ultraviolet radiation.
- (informally but erroneously) Fresh air, especially that breathed at the seaside and smelling of seaweed.
Etymology: From Ancient Greek á, neuter participle of á
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Full Definition of ozone
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