Medical Definition of scala media
plural scalae me·di·ae \-ē-ˌē\play
: 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 cochlear canal, cochlear duct, ductus cochlearis
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