mastectomy

noun, plural mas·tec·to·mies. Surgery.

1. the operation of removing all or part of the breast or mamma.

noun plural -mies

1. the surgical removal of a breast

n.surgical removal of a breast, 1909, from Greek mastos “woman’s breast” (see masto-) + -ectomy. n.

1. Surgical removal of all or part of a breast, sometimes including excision of the underlying pectoral muscles and regional lymph nodes, usually performed as a treatment for cancer.mammectomy

1. Surgical removal of all or part of a breast, performed as a treatment for cancer.♦ A radical mastectomy includes excision of the underlying pectoral muscles and regional lymph nodes.

The surgical removal of a breast.