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Related to defeasance: Legal defeasance, In Substance Defeasance
1. A rendering void; an annulment.
a. The voiding of a contract or deed.
b. A clause within a contract or deed providing for annulment.
[Middle English defesaunce, from Anglo-Norman, from Old French defesance, from defesant, present participle of desfaire, to destroy; see defeat.]
1. (Law) the act or process of rendering null and void; annulment
a. a condition, the fulfilment of which renders a deed void
b. the document containing such a condition
[C14: from Old French, from desfaire to defeat]
1. a condition rendering a deed or other instrument void.
2. a document stipulating such a condition.
[1400–50; Old French defesance <desfes- (past participle s. of desfaire to undo; see defeat)]