Dictionary.com
Thesaurus.com

lumpectomy

American  
[luhm-pek-tuh-mee] / lʌmˈpɛk tə mi /

noun

  • lumpectomies
    plural
  1. the surgical removal of a breast cyst or tumor.


lumpectomy British  
/ lʌmˈpɛktəmɪ /

noun

  1. the surgical removal of a tumour in a breast

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of lumpectomy

First recorded in 1970–75; lump 1 + -ectomy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

When she first discovered a lump in her left breast, she had a lumpectomy to remove it, then went through radiation.

From The Wall Street Journal May 4, 2026

"Maybe it wasn't. Maybe I could have had a lumpectomy."

From BBC Nov. 28, 2025

When the new year came around, she had a lumpectomy to remove the tumor.

From Los Angeles Times Oct. 8, 2024

Her treatment included, chemotherapy, lumpectomy, a full mastectomy on the left side and 15 sessions of radiotherapy.

From BBC May 17, 2024

And most importantly, every one of them had received no other debilitating medical treatment except a needle biopsy or simple lumpectomy.

From How and When to Be Your Own Doctor by Steve Solomon

The cameras follow her as she undergoes two lumpectomies - a type of surgery that removes a portion of breast tissue.

From BBC Feb. 25, 2026

Elsewhere, glass in the shape of biological masses is covered in delicate wire and thread, looking like the oversize results from lumpectomies.

From The Wall Street Journal Nov. 28, 2025

Those lumpectomies and mastectomies are essentially “fear-ectomies” that remove something frightening but not medically threatening.

From Slate Mar. 22, 2024

They followed nearly 200 women with two or three tumors in one breast who had lumpectomies followed by radiation.

From Seattle Times Dec. 9, 2022

These days many surgeons routinely limit themselves to lumpectomies.

From How and When to Be Your Own Doctor by Steve Solomon

Vocabulary.com logo
by dictionary.com

Join 14,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training