mastectomy | meaning of mastectomy in Longman Dictionary of Contemporary English | LDOCE

From Longman Dictionary of Contemporary EnglishHospitalmastectomymas‧tec‧to‧my /mæˈstektəmi/ noun (plural mastectomies) [countable]    medicalMH a medical operation to remove a breastExamples from the Corpusmastectomy• She had a mastectomy and says she is now fine.• He helped her in a two-year battle against cancer and to come to terms with her double mastectomy.• I had my double mastectomy when I was twenty-three.• And now state legislators and members of Congress are proposing that insurers pay for two-day stays for mastectomies.• Later she had a full mastectomy and was just getting over that when they discovered the cancer had spread to her bones.• Greer interviewed a number of women who had had mastectomies.• We also sell prosthetics for women who have had mastectomies, so that is a whole other private dressing area.• All three had had bi-lateral mastectomies.Origin mastectomy (1900-2000) Greek mastos “breast” + English -ectomy