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Audiology Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

sensorineural hearing loss

Professional Technical IVT

Hearing impairment caused by damage to the inner ear or auditory nerve pathways.

Showing 25–48 of 100

bimodal fitting

Advanced Technical IVT

A hearing rehabilitation configuration in which one ear is fitted with a cochlear implant and the contralateral ear is f...

Technical Term Full entry →

bone conduction

Intermediate Technical IVT

Sound transmission pathway through skull vibration that bypasses the outer and middle ear structures.

Technical Term Full entry →

BPPV

Intermediate Technical IVT

Benign Paroxysmal Positional Vertigo; the most common vestibular disorder, characterised by brief episodes of vertigo tr...

Technical Term Full entry →

BTE

Basic Technical IVT

A hearing aid style in which the processing electronics sit in a casing worn behind the pinna, connected to the ear cana...

Abbreviation Full entry →

Carhart notch

Advanced Technical IVT

A characteristic audiometric depression in bone-conduction thresholds at 2000 Hz, classically associated with otoscleros...

Technical Term Full entry →

cerumen management

Basic Technical IVT

The clinical practice of removing or managing earwax (cerumen) that may obstruct the ear canal or interfere with audiolo...

Technical Term Full entry →

CIC

Basic Technical IVT

The smallest visible custom hearing aid style, fitted deeply within the ear canal with only a small removal cord visible...

Abbreviation Full entry →

cochlear implant

Professional Technical IVT

Surgically implanted electronic device that bypasses damaged hair cells to directly stimulate auditory nerve fibers.

Technical Term Full entry →

Compression Ratio

Advanced Technical IVT

In hearing aid processing, the ratio of the change in input sound level to the corresponding change in output level, des...

CR
Technical Term Full entry →

conductive hearing loss

Intermediate Technical IVT

Hearing impairment caused by problems in the outer or middle ear that block sound transmission.

Technical Term Full entry →

Contralateral Routing of Signal

Intermediate Technical IVT

A hearing device configuration that routes sound from the poorer ear to the better ear; abbreviated CROS — note: editors...

Technical Term Full entry →

CROS

Intermediate Technical IVT

Hearing aid system that routes sound from a deaf ear to a hearing aid on the better-hearing ear for single-sided deafnes...

Medical Device Full entry →

dB eHL

Advanced Technical IVT

The unit used to express ASSR thresholds after statistical correction to approximate behavioural hearing level equivalen...

Abbreviation Full entry →

dB HL

Professional Technical IVT

Decibels hearing level, the standard unit for measuring hearing thresholds relative to normal hearing.

Technical Term Full entry →

degrees of hearing loss

Basic Semi-formal IVT

A classification system categorising hearing sensitivity into ranges (e.g., mild, moderate, severe, profound) based on p...

Style Convention Full entry →

Directional Microphone

Intermediate Technical IVT

A hearing aid microphone system designed to preferentially amplify sounds arriving from in front of the listener while a...

Technical Term Full entry →

dynamic range

Intermediate Technical IVT

The difference in decibels between a patient's hearing threshold and their uncomfortable loudness level, representing th...

Technical Term Full entry →

Ear Canal

Basic Semi-formal

The tubular passage leading from the outer ear to the tympanic membrane, also termed the external auditory meatus or ext...

Technical Term Full entry →

earmould

Basic Technical IVT

A custom-made coupling device fitted to the ear canal and concha that connects a behind-the-ear hearing aid to the ear a...

Technical Term Full entry →

electric-acoustic stimulation

Advanced Technical IVT

A hearing rehabilitation strategy combining a cochlear implant for high-frequency electrical stimulation with a hearing...

Technical Term Full entry →

FM system

Intermediate Semi-formal IVT

A wireless assistive listening device that transmits a speaker's voice via frequency-modulated radio signals directly to...

Technical Term Full entry →

functional gain

Intermediate Technical IVT

Difference between unaided and aided hearing thresholds, representing the effective amplification provided by hearing ai...

Clinical Measurement Full entry →

Hearing Aid Dispenser

Intermediate Formal IVT

A regulated professional qualified to select, fit, and sell hearing aids, with a scope of practice narrower than that of...

Technical Term Full entry →

HINT

Intermediate Technical IVT

A standardised clinical test that measures a patient's ability to repeat sentences presented against a background of spe...

Technical Term Full entry →
Showing 25–48 of 100

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