cochlear duct
noun
variants:
also cochlear canal
Medical Definition of cochlear duct
: the spirally arranged canal in the bony canal of the cochlea that contains the organ of Corti, is triangular in cross section, and is bounded by the vestibular membrane above, by the periosteum-lined wall of the cochlea laterally, and by the basilar membrane below
— called also ductus cochlearis, scala media