Reversionary
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
That which is to be enjoyed in reversion.
— Reversionary interest. The interest which a person has in the reversion of lands or other property. A right to the future enjoyment of property, at present in the possession or occupation of another. Holthouse.
— Reversionary lease. One to take effect in futuro. A second lease, to commence after the expiration of a former lease. Wharton.