The Collaborative International Dictionary of English v.0.48:

Exscind \Ex*scind"\, v. t. [imp. & p. p. Exscinded; p. pr. &
   vb. n. Exscinding.] [L. exscindere; ex out, from + scindere
   to cut.]
   To cut off; to separate or expel from union; to extirpate.
   --Barrow.
   [1913 Webster]

         The second presbytery of Philadelphia was also
         exscinded by that Assembly.              --Am. Cyc.
   [1913 Webster]