Source : Webster's Revised Unabridged Dictionary (1913)

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.