Source : Webster's Revised Unabridged Dictionary (1913)

Resection \Re*sec"tion\ (r?-s?k"sh?n), n. [L. resectio: cf. F.
   r['e]section.]
   1. The act of cutting or paring off. --Cotgrave.

   2. (Surg.) The removal of the articular extremity of a bone,
      or of the ends of the bones in a false articulation.

Source : WordNet®

resection
     n : surgical removal of part of a structure or organ