Skip to Content


Pronunciation: lab'i-rinth


  1. The internal or inner ear, composed of the semicircular ducts, vestibule, and cochlea.
  2. Any group of communicating cavities, as in each lateral mass of the ethmoid bone.
  3. A group of upright test tubes terminating below in a base of communicating, alternately u-shaped and n-shaped tubes, used for isolating motile from nonmotile organisms in culture, or a motile from a less motile organism (as the typhoid from the colon bacillus), the former traveling faster and farther through the tubes than the latter.
Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.