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1650s, from Latin resectus, past participle of resecare "to cut off, cut loose, curtail," from re-, intensive prefix (see re-), + secare "to cut" (see section (n.)). Surgical sense is from 1846. Related: Resected; resecting.
resect re·sect (rĭ-sěkt')v. re·sect·ed, re·sect·ing, re·sects To perform a resection on a part of the body.