AC
air conduction
AD
right ear
AOM
acute otitis media
AS
left ear
AU
both ears
CAPD
central auditory processing disorder
dB
decibel
ENT
ear, nose, and throat
ET
eustachian tube
HD
hearing distance
HL
hearing level, hearing loss
OM
otitis media
ORL
otorhinolaryngology
SOM
serious otitis media
TM
tympanic membrane
VTA
visual reinforcement audiometry