n, pl  -mies  :  excision or amputation of a mammary gland and usu. associated tissue - see MODIFIED RADICAL MASTECTOMY RADICAL MASTECTOMY SIMPLE MASTECTOMY  .
 
 
 
Similar sounding terms:  mas·tec·to·mee 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.