Dictionary.com

mastectomy

[ ma-stek-tuh-mee ]
/ mæˈstɛk tə mi /
Save This Word!

noun, plural mas·tec·to·mies.Surgery.
the operation of removing all or part of the breast or mamma.
QUIZ
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help
Also called mammectomy.

Origin of mastectomy

First recorded in 1920–25; mast- + -ectomy

OTHER WORDS FROM mastectomy

post·mas·tec·to·my, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use mastectomy in a sentence

British Dictionary definitions for mastectomy

mastectomy
/ (mæˈstɛktəmɪ) /

noun plural -mies
the surgical removal of 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

Medical definitions for mastectomy

mastectomy
[ mă-stĕktə-mē ]

n.
Surgical removal of all or part of a breast, sometimes including excision of the underlying pectoral muscles and regional lymph nodes, usually performed as a treatment for cancer.mammectomy
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for mastectomy

mastectomy
[ mă-stĕktə-mē ]

Surgical removal of all or part of a breast, performed as a treatment for cancer.♦ A radical mastectomy includes excision of the underlying pectoral muscles and regional lymph nodes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for mastectomy

mastectomy
[ (ma-stek-tuh-mee) ]

The surgical removal of a breast.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK