Ear Canal
The tubular passage leading from the outer ear to the tympanic membrane, also termed the external auditory meatus or external auditory canal.
Full Definition
The ear canal (external auditory canal/meatus) channels sound waves from the pinna to the tympanic membrane. In clinical audiology reports, the preferred formal term is 'external auditory canal' (EAC) or 'external auditory meatus' (EAM), though 'ear canal' is acceptable in semi-formal and patient-facing texts. Editors should ensure consistent usage within a single document and expand abbreviations (EAC, EAM) on first use. The canal's anatomical features — such as its cartilaginous and bony portions — may be referenced in surgical or cerumen-management reports. Do not confuse with 'ear canal resonance,' which is a distinct acoustic concept relevant to real-ear measurements.
Usage
Usage note: Formal clinical writing prefers 'external auditory canal' or 'external auditory meatus.' Abbreviations EAC and EAM should be expanded at first mention.
In Context
- "The external auditory canal was clear of debris, and the tympanic membrane was fully visible." — Audiology pre-test checklist
- "Use 'external auditory canal' in clinical manuscripts; 'ear canal' is acceptable in patient information leaflets." — Hospital editorial policy