Definitions

1. noun

A surgical operation to remove a mammary gland, especially in the treatment of breast cancer.

“The doctor explained the procedure of a mammotomy to the patient, reassuring her that it was a common and effective treatment.”

2. noun

A removal of a mammary gland, especially in the treatment of a breast tumour.

“The mammotomy was a major operation, and the patient required several weeks of recovery time.”