Definify.com

Webster 1913 Edition

Noun.

[OF.

dessaisine

(Law)

The act of disseizing; an unlawful dispossessing and ouster of a person actually seized of the freehold.

[Written also

disseisin

Blackstone.

Noun.

The act of disseizing; an unlawful dispossessing of a person of his lands, tenements, or incorporeal hereditaments; a deprivation of actual seizin.

disseizin ‎(plural disseizins)

(law) The act of disseizing; an act of unlawful dispossessing, especially of someone's lands.
(Can we find and add a quotation of Blackstone to this entry?)
(figuratively) Dispossession.
- 1911, Max Beerbohm, Zuleika Dobson:
  Why should the disseizin of his soul have seemed shameful to him?