The Collaborative International Dictionary
Disseizing
Disseize \Dis*seize"\, v. t. [imp. & p. p. Disseized; p. pr. & vb. n. Disseizing.] [Pref. dis- + seize: cf. F. dessaisir.] (Law) To deprive of seizin or possession; to dispossess or oust wrongfully (one in freehold possession of land); -- followed by of; as, to disseize a tenant of his freehold. [Written also disseise.]
Which savage beasts strive as eagerly to keep and hold
those golden mines, as the Arimaspians to disseize them
thereof.
--Holland.
Wiktionary
disseizing
vb. (present participle of disseize English)