from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Surgical removal of mastoid cells or part or all of the mastoid process.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The surgical procedure to remove part or all of the mastoid process.
from The Century Dictionary and Cyclopedia
- n. A surgical operation for the excavation of the mastoid process.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. surgical removal of some or all of the mastoid process
mastoid + -ectomy (Wiktionary)