A previous version of internal part of a particular cochlear implant made by Advanced Bionics. It was superseded by theCII Bionic Ear in April 2001.
CIS
See Continuous Interleaved Sampling.
CII Bionic Ear
The internal part of a particular cochlear implant made by Advanced Bionics, and released in April 2001. The CII Bionic Ear was superseded by the HiRes 90K internal component, released in September 2003.
CIC
See Completely In the Canal hearing aid.
Cilia
The tiny “hairs” within the cochlea.
Cholesteatoma
A non-cancerous tumor where skin cells grow uncontrolled (usually through a hole in the eardrum) and accumulates in the middle ear. It may also be the result of chronic otitis media. A cholesteatoma damages the middle ear and surrounding structures and needs to be surgically removed.