📚 Acid rain, noun. 🔉 /ˌæsɪd ˈreɪn/ 🇬🇧 /ˌæsɪd ˈreɪn/ 🇺🇸 ❓ Definition (uncountable): Rain that contains harmful chemicals from factory gases and that damages trees, crops and buildings. ❗️ Examples: 1. Sulphur, falling as acid rain, is killing fish in the Great Lakes. ━━━━━━━━━━━━━ 🌀 @cambridge_dic