The oval window is a small, oval-shaped opening situated in the inner ear that connects the middle ear to the inner ear. This opening is also known as the fenestra ovalis, which is a Latin term that describes the shape and location of this window. Other synonyms for the oval window include the vestibular window, the secondary tympanic membrane, and the elliptical membrane. These terms all refer to the same structure and are used interchangeably in medical terminology. The oval window plays a crucial role in the process of hearing, allowing vibrations from the middle ear to be transmitted to the inner ear and eventually interpreted by the brain.