də̇ˈfēz ə n(t)s, dēˈ- noun
( -s )
Etymology: Middle English defesance, from Anglo-French, from Old French desfesant, deffesant, present participle of desfaire, deffaire to destroy, undo — more at defeat
1.
a. : a rendering null or void
b.
(1) : the ending of a property interest in accordance with conditions stipulated in the terms of a deed ; also : a collateral deed or instrument stating such a condition of termination
(2) : the ending of a property interest through a power of termination or an executory limitation
2. : defeat , overthrow , undoing