Definition of "vestibula" [vestibula]

• Plural of vestibulum. (noun)

The Century Dictionary (Public Domain)

• "These lie side by side and are named, from their relations to other parts, the _scala vestibula_, the _scala tympani_, and the _scala media_."
• "The connection of the scala vestibula with the scala tympani, and this with the middle ear, is necessary for the passage of vibrations through the internal ear."
• "It is above the scala tympani and below the scala vestibula, and is separated from each by a membrane."