To cut or pare off; to remove by cutting.

cut off, curtailed ("resectus")

To cut off, or cut out, a portion of a structure or organ.

To excise surgically; surgical removal of a lesion with margins.

surgically remove a part of a structure or an organ

To remove. Resect and excise are not synonymous. Excise implies total removal whereas resect need not. A surgeon may resect part or all of a tumor but if the surgeon excises the tumor, all of the tumor is removed. From the Latin resectus, from resecare, meaning to trim, prune, cut back. See the entire definition of Resect