Definition

1. Noun:
   • Mastoid bone: A conical, bony prominence of the temporal bone located behind the external ear. It serves as an attachment point for several neck muscles and contains air-filled spaces (mastoid cells) that connect to the middle ear cavity.

Usage

• The term "mastoid bone" is used primarily in medical, anatomical, and biological contexts to refer to this specific part of the skull.
• It is often discussed in relation to ear infections (mastoiditis), surgical procedures (mastoidectomy), or anatomical descriptions.

Examples

• Noun:
  • The infection spread from the middle ear to the mastoid bone.
  • A CT scan revealed a fracture in the patient's mastoid bone.
  • The surgeon carefully drilled into the mastoid bone to access the infected cells.

Advanced Usage

• "Mastoid process": This is the full anatomical term for the prominent, nipple-like projection of the mastoid bone that can be felt behind the ear.
  • The doctor palpated the mastoid process to check for tenderness.
• "Mastoid air cells": Refers to the hollow, honeycomb-like spaces within the mastoid bone.
  • The inflammation had blocked the mastoid air cells.

Variants and Related Words

• Mastoid (adj): Pertaining to the mastoid bone or its process.
  • The patient underwent mastoid surgery.
• Mastoiditis (n): A medical condition involving infection and inflammation of the mastoid air cells.
  • Acute mastoiditis is a serious complication of otitis media.
• Mastoidectomy (n): A surgical procedure to remove part of the mastoid bone.
  • A radical mastoidectomy was performed to eradicate the chronic infection.

Synonyms

• Mastoid process: The most precise synonym, referring to the same bony projection.
• Mastoid: Often used informally in medical contexts to refer to the bone or the area.

Related Phrases

• "To have mastoiditis": To be diagnosed with an infection of the mastoid bone.
  • The child was hospitalized after he was found to have mastoiditis.
• "Mastoid tenderness": Pain upon touching the area over the mastoid bone, a common clinical sign.
  • Mastoid tenderness is a key symptom the physician looks for.

Related Idioms

(There are no common idioms that specifically feature the term "mastoid bone." It is a technical anatomical term.)

Noun

1. process of the temporal bone behind the ear at the base of the skull