lumpectomy

noun

lump·​ec·​to·​my ˌləm-ˈpek-tə-mē 

plural lumpectomies

: excision of a breast tumor with a limited amount of associated tissue

Examples of lumpectomy in a Sentence

Recent Examples on the Web

Sylvester surgeons determined a breast-conserving lumpectomy was the better option, according to UHealth. — Howard Cohen, Miami Herald, 15 Oct. 2026

Peet, who had been screened since her late 30s because of dense breast tissue and prior benign lumps, was treated with a lumpectomy and radiation and is now on tamoxifen. — Samantha Agate, Kansas City Star, 14 Oct. 2026

The star is now cancer-free after undergoing a lumpectomy and radiation. — Stephanie Nolasco, FOXNews.com, 22 Sep. 2026

What followed was a lumpectomy that revealed stage 2 disease, four rounds of chemotherapy over 12 weeks and 36 radiation treatments. — Emily Cegielski, Flow Space, 10 Aug. 2026

Word History

First Known Use

1972, in the meaning defined above

Rhymes for lumpectomy

• colectomy
• cystectomy
• gastrectomy
• lobectomy
• mastectomy
• nephrectomy
• splenectomy
• thymectomy
• vasectomy
• vitrectomy
• adrenalectomy
• cholecystectomy

Medical Definition

lumpectomy

noun

lump·​ec·​to·​my ˌləm-ˈpek-tə-mē 

plural lumpectomies

: excision of a breast tumor with a limited amount of associated tissue

called also tylectomy

compare quadrantectomy