The proper term for ringing buzzing or roaring in the ears is Tinnitus. The proper medical way to pronounce it is TIN-nit-us, not tin-I-tus (the second pronunciation would denote an inflammation, which tinnitus is not).
There are many causes of tinnitus, but in general it is caused by a disruption in the auditory pathway to the brain. The brain tries to interpret the random misfiring that this disruption causes, but it cannot. The hearing center of the brain (temporal lobe) sends the signal to the thinking part of your brain (frontal cortex) to help it out. When it reaches the frontal cortex is when you first perceive it. Hench, you then hear Tinnitus.
Auricle is the medical term referring to the visible part of the ear.
Otalgia is the medical term meaning ear pain.
Ear ache
outer ear
Otoplasty is surgical repair or reshaping of the ear.
Otectomy
The medical term for absence of the external ear is "anotia." This condition involves complete absence of the external ear.
barotrauma
otiectomy
tinnitus
An otolith, which translated literally means ear stone, is a part of the vestibular system in the ear.
The medical term for buildup of fluid within the middle ear is otitis media with effusion.