Definition of reversion noun from the Oxford Advanced Learner's Dictionary

reversion

noun

rɪˈvɜːʃn

rɪˈvɜːrʒn

1 [uncountable, singular] reversion (to something) (formal) the act or process of returning to a former state or conditiona reversion to traditional farming methods2 [uncountable, countable] (law) the return of land or property to somebodythe reversion of Hong Kong to China3 (North American English, law) = leaseback