Surgical removal of the lateral wall and contents of the mastoid process, usually to treat mastoiditis; (later also, chiefly in "(modified) radical mastoidectomy") this procedure combined with excision of some or all of the adjacent middle ear structures.
Origin
Late 19th century; earliest use found in Laryngoscope. From mastoid + -ectomy.
Definition of mastoidectomy in US English:
mastoidectomy
nounˌmastɔɪˈdɛktəmi
Surgical removal of the lateral wall and contents of the mastoid process, usually to treat mastoiditis; (later also, chiefly in "(modified) radical mastoidectomy") this procedure combined with excision of some or all of the adjacent middle ear structures.
Origin
Late 19th century; earliest use found in Laryngoscope. From mastoid + -ectomy.