ex·pul·sion 
/ɪkˈspʌlʃən/ noun
plural ex·pul·sions /ɪkˈspʌlʃən/ noun 1 : the act of forcing someone to leave a place (such as a country or a school) : the act of expelling someone [count] ▪ The government engaged in mass expulsions. [noncount] ▪ He was threatened with expulsion (from the school) if his grades didn't improve. 2 [noncount] : the act of forcing something out : the act of expelling something
▪ the expulsion of air from the lungs
▪ the expulsion of air from the lungs
