Definition of mastectomy in English:



  • A surgical operation to remove a breast.

    ‘a double mastectomy’
    [mass noun] ‘they have undergone mastectomy’
    • ‘The authors recommend their large-tissue-section approach for routine handling of all breast excisions and mastectomies.’
    • ‘There are sports bras, nursing bras, bras designed to take prosthetic breasts for women who have undergone mastectomies.’
    • ‘Reconstruction can be done in the same operation as the mastectomy, and may be more successful if it's done straight away.’
    • ‘A proportion of patients who have a mastectomy are advised to undergo radiotherapy to reduce the risk of local recurrence.’
    • ‘It may be possible for women who have had a mastectomy to have reconstructive surgery without the use of implants.’


1920s: from Greek mastos breast + -ectomy.