Wordnet 3.0
ADJECTIVE (1)
1.
capable of being annulled or voided or terminated;
- Example: "a claim to an estate may be defeasible so long as the claimant is under 21 and unmarried"
The Collaborative International Dictionary of English v.0.48:
Defeasible \De*fea"si*ble\, a. [See Defeasance.]
Capable of being annulled or made void; as, a defeasible
title. -- De*fea"si*ble*ness, n.
[1913 Webster]
WordNet (r) 3.0 (2006):
defeasible
adj 1: capable of being annulled or voided or terminated; "a
claim to an estate may be defeasible so long as the
claimant is under 21 and unmarried" [ant: indefeasible]