re·place·ment 
/rɪˈpleɪsmənt/ noun
plural re·place·ments /rɪˈpleɪsmənt/ noun 1 [noncount] : the act of replacing something
▪ She underwent a hip replacement. [=a doctor replaced her hip with an artificial hip] ▪ Is your old dictionary in need of replacement? [=do you need a new dictionary?] ▪ Your car's replacement cost is less than the cost to repair it. [=it costs less to buy a new car than it does to fix your car] 2 [count] : a person or thing that replaces someone or something else
▪ I'm training my replacement. ▪ We need a replacement for our old vacuum cleaner. ▪ Where can we get replacement parts for the tractor?
▪ She underwent a hip replacement. [=a doctor replaced her hip with an artificial hip] ▪ Is your old dictionary in need of replacement? [=do you need a new dictionary?] ▪ Your car's replacement cost is less than the cost to repair it. [=it costs less to buy a new car than it does to fix your car]
▪ I'm training my replacement. ▪ We need a replacement for our old vacuum cleaner. ▪ Where can we get replacement parts for the tractor?
