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Meaning of mastoidectomy

mas•toid•ec•to•my

Pronunciation: (mas"toi-dek'tu-mē), [key]
— pl. -mies.
  1. the removal of part of a mastoid process, usually for draining an infection.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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