ozone 
/ˈoʊˌzoʊn/ noun
/ˈoʊˌzoʊn/ noun [noncount] 1 : a form of oxygen that is found in a layer high in the earth's atmosphere
▪ Scientists are concerned about ozone depletion. ▪ an ozone-friendly product [=a product that will not reduce the ozone in the upper atmosphere] 2 chiefly Brit, informal : fresh healthy air especially near the sea
▪ A light breeze filled the rooms of our seaside cottage with ozone.
▪ Scientists are concerned about ozone depletion. ▪ an ozone-friendly product [=a product that will not reduce the ozone in the upper atmosphere]
▪ A light breeze filled the rooms of our seaside cottage with ozone.
