Function: noun
Date: 1978
: precipitation (as rain or snow) having increased acidity caused by environmental factors (as atmospheric pollutants)
Function: noun
Date: 1978
: precipitation (as rain or snow) having increased acidity caused by environmental factors (as atmospheric pollutants)
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012