re·ver·sion 
/rɪˈvɚʒən, Brit rɪˈvə:ʃən/ noun
plural re·ver·sions /rɪˈvɚʒən, Brit rɪˈvə:ʃən/ noun 1 technical + formal : an act or process of returning to an earlier condition or state — usually + to [count] — usually singular ▪ a reversion to a primitive state ▪ a reversion to old customs/habits [noncount] ▪ His photos document the land's reversion to swamp. 2 [count, noncount] law : the returning of property to a former owner or to a person who received the right to it when the former owner died
▪ the reversion of the estate
▪ the reversion of the estate
