membranous labyrinth

noun

: the sensory structures of the inner ear

Word History

First Known Use

1840, in the meaning defined above

Medical Definition

membranous labyrinth

noun

: the system of membrane-lined interconnected sacs and passages that is suspended within the bony labyrinth of the inner ear, is filled with endolymph and surrounded by perilymph, and includes the cochlear duct, utricle, saccule, and semicircular ducts