Final answer:
Otosclerosis is a condition characterized by progressive hearing loss due to abnormal bone growth in the middle ear.
Step-by-step explanation:
The disorder known as otosclerosis is a condition that affects the bones in the middle ear, leading to progressive hearing loss. It is characterized by abnormal bone growth in the ear, specifically the stapes bone. This bone, when affected by otosclerosis, is unable to vibrate properly and transmit sound waves to the inner ear.
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