mastectomy

(mas tektə mē)

noun pl. mastectomies

the surgical removal of all or part of a breast, usually so as to remove cancerous tissue

Origin: mast(o)- + -ectomy

See mastectomy in American Heritage Dictionary 4

noun pl. mas·tec·to·mies
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.

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