(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.
(Britain, informal) Fresh air, especially that breathed at the seaside and smelling of seaweed.
ozon
ozón
ozone hole
noun
A region of the stratosphere over Antarctica (and a smaller one over the Arctic) that is depleted of ozone in the local spring.
ozonová díra
ozone layer
noun
A region of the stratosphere, between 15 and 30 kilometres in altitude, containing a relatively high concentration of ozone, which absorbs most solar ultraviolet radiation.
ozonová vrstva
ozonosphere
noun
A layer in part of the stratosphere that has a larger than normal concentration of ozone; the ozone layer.