term:

Disseisin

disseisin

or
dis·sei·zin
[di-sēz-n]

n
[Anglo-French disseisine, from Old French dessaisine, from dessaisir to dispossess see disseise ]
: the act of disseising
: the state of being disseised

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.