ozone

ozone

CEFR: C1-C2 /ozone/ [ow1.z.ow2.n]

Definition: (O3))A colourless unstable toxic gas with a pungent odour and powerful oxidizing propertiesExample senences:

Example Sentences:
The four usual agents of deterioration in the air apart from oxygen and water are sulphur dioxide, hydrogen sulphide, ozone and nitrogen dioxide