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mastectomy

[ma-stek-tuh-mee]
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noun, plural mas·tec·to·mies. Surgery.
  1. the operation of removing all or part of the breast or mamma.
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Origin of mastectomy

First recorded in 1920–25; mast- + -ectomy
Also called mammectomy.
Related formspost·mas·tec·to·my, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for mastectomy

mastectomy

noun plural -mies
  1. the surgical removal of a breast
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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

Word Origin and History for mastectomy

n.

surgical removal of a breast, 1909, from Greek mastos "woman's breast" (see masto-) + -ectomy.

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Online Etymology Dictionary, © 2010 Douglas Harper

mastectomy in Medicine

mastectomy

(mă-stĕktə-mē)
n.
  1. 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
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

mastectomy in Science

mastectomy

[mă-stĕktə-mē]
  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

mastectomy in Culture

mastectomy

[(ma-stek-tuh-mee)]

The surgical removal of a breast.

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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.