Definitions
ozone Tweet Definition of ozone Like Definition of ozone on Facebook
noun 
  1. (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.
  2. (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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